01：【好题精选】阅读单选-2023年九年级下学期英语专题周周练（第一期）（河南）（含解析）

01：【好题精选】阅读单选-2023年九年级下学期英语专题周周练
（第一期）（河南）
学校:___________姓名：___________班级：___________考号：___________
01
Best Inventions in Our Life
What will the future look like Here is a peek (一瞥)! Take a look at five of the year’s coolest ideas.
A Tiny FlierMeet DJI’s Mavic Pro. It is a drone (无人驾驶飞机). Most drones are big. But this one is small. When folded, it is the size of a piece of bread. Its size helps it get into fewer accidents.
A Special PotatoKids in parts of Africa don’t get enough vitamin A．It is needed for good health. So scientists grew a special sweet potato there. It has lots of vitamin A．It tastes good, too!
Kids Step UpCan a bike ride change the world The UNICEF Kid Power Band lets kids in the US get points for exercise. More and more kids are interested in it. They trade the points for food for hungry kids in other countries.
A Bright IdeaThe light bulb (灯泡) has an important job. It brings light to darkness. Now there’s Flyte. It is a light bulb that can float by using electricity and magnet (磁力). It is also wireless.
Built to PlayMost man-made body parts are not fun. They do the job. That’s it. But kids want to play, too. Iko helps solve this problem. Kids can replace the hand with toy-like parts. The parts can be used with Lego — a Lego rocket ship, for example.
The small size of the drone ________.
A．makes it more expensive B．makes it fly higher
C．makes it very cheap D．makes it have fewer accidents
2．Why do people call the potato in Africa “a special sweet potato”
A．Because it tastes very sweet. B．Because it is grown in Africa.
C．Because it has lots of vitamin A． D．Because it is good for health.
3．The UNICEF Kid Power Band lets kids in the US interested in riding bikes because ________.
A．it changes the world B．it looks very cool
C．it makes kids get points for exercise D．it helps hungry kids in other countries
4．Which of the following is NOT true about Flyte
A．It is an important invention. B．It brings light to darkness.
C．It doesn’t need any electric wire. D．Its energy only comes from electricity.
5．What problem does Iko help kids solve
A．Playing. B．Doing jobs.
C．Doing homework D．Making friends.
02
Spoken English Learning
#221: How should we improve our spoken English (By Mandy).
A great thing about learning a language is that you don’t have to sit down with a textbook for many hours and learning English doesn’t mean doing grammar exercises all the time. Well, you can live in English and watch English TV shows. You can read books and texts and you can travel. You can do everything in English.
That’s why we are doing this. Use English in real daily conversations. We want to show people it’s not strange for Chinese to communicate in English. We want to tell everybody that we should be confident of our accents. And “speak out” is the first step of learning English. In this video, you’re going to watch many funny conversations and gradually improve spoken English.
COMMENTS (评论)
Pam/ Henan / 2 hours ago
I really want to learn English well but I always fail many English exams. Luckily, I found this video online. It’s very useful. I hope I will make progress gradually.
Sandra/Sichuan/ 6 days ago
All the conversations are interesting and Mandy’s voice is sweet. When I have free time, I will watch them. I want to take more lessons. But I am afraid to speak English in public. I hope I can be brave after learning from Mandy.
Nora/ Henan/ 15 days ago
Mandy’s accent is perfect and she sounds like a native speaker. That is great. I sometimes can’t follow my English teacher in class.
Nita/ Jilin/ 1 month ago
I want my children to join you and I will ask them to attend your lessons online after they finish their phonics (自然拼读) lessons. My children can’t remember words. Maybe the educational videos can help them.
6．What’s the first step of learning English according to the text
A．Studying grammar. B．Speaking in English.
C．Remembering words. D．Watching English shows.
7．The latest comment is from ________.
A．Pam B．Sandra C．Nora D．Nita
8．What is Nora’s problem with English
A．She always fails English exams.
B．She is not confident of her accent.
C．She dare not speak English in public.
D．She can’t understand her English teacher in class.
9．What can we learn from the comments
A．Nita is a mother. B．Mandy is British.
C．Pam and Nora are classmates. D．Sandra thinks the video is boring.
10．In which part of the website can we find the text
A．History. B．Business. C．Travel. D．Education.
03
I went to London with my parents during the summer vacation. We spent ten days there so that we could visit all the places of interest in the city. On the first day we just rested in the hotel in the morning and visited the London Eye in the afternoon. On the second day we visited the Palace of Westminster and Tower Bridge. We visited other places in the next eight days and enjoyed ourselves a lot.
I spent my summer vacation with my grandparents in the countryside and I had a good time. Living in the countryside used to be inconvenient, but I’m glad that many things have changed. For example, the roads are flat and wide. And there are several big parks and hospitals. To my surprise, my grandparents even have learned to use the computer and surf the Internet!
My hometown is a small town near the sea. I used to visit it because the air was fresh. But I was surprised when I visited my hometown this summer. The sky there was gray and most of the people there wore masks (口罩) on the street. Someone told me that there was a big factory in the town and it polluted both air and water. I was sad to hear that.
I used to go traveling during the summer vacation, but this year I just stayed at home because my little cousin came. He was really a cute boy. I played with him and taught him many things such as playing basketball and cooking. We also went swimming. And in the swimming pool, he was my teacher! He stayed at my home for twenty days and I expect to see him again next summer.
根据材料内容选择最佳答案，并将其标号填入题前括号内。
Jane spent ________ days enjoying herself in London.
A．2 B．5 C．8 D．10
12．Alice’s grandparents live in ________
A．a big city B．a small town C．the countryside D．the suburbs
13．Maria was ________ to see the changes in her hometown.
A．surprised and sad B．happy and surprised C．surprised and excited D．excited and happy
14．________ just stayed at home during the summer vacation.
A．Alice B．Linda C．Jane D．Maria
15．According to the text, we can infer(推断)that ________
A．Jane didn’t visit the London Eye in London. B．Maria’s hometown is famous for its fresh air.
C．Alice’s grandparents were computer engineers. D．Linda’s cousin is good at swimming.
04
People have tried many times to produce electricity. Let’s look at some inventions for producing and using electricity.
Windmills were invented in the 7th century. Marcellus Jacobs first thought of using the power of windmills to produce electricity in 1930.
Diesel generators are often used in some shops, hotels and restaurants to produce electricity when the power is off.
In 1800, Alessandro Volta succeeded in building a voltaic pile to produce electricity. His voltaic pile was the first battery in the world.
Joseph Swan and Thomas Edison spent months producing a light bulb and they worked together to make their invention in 1879.
In fact, nature also has its own ways of producing electricity. Not just lightning, some animals also produce electricity. For example, some fish produce enough electricity to attack other animals, while others produce electricity to stop other animals from attacking them.
Word Bank windmill 风车 diesel generators 柴油发电机 lightning 闪电 voltaic pile 伏打电堆 attack 攻击
根据材料内容选择最佳答案。
When did Marellus Jacobs first thought of using the power of windmills to produce electricity
A．In 1879. B．In 1890. C．In the 7th century. D．In 1930.
17．Where are diesel generators often used according to the text
A．In some shops and hotels. B．In some shops and schools.
C．In some hospitals and hotels. D．In some farms and restaurants.
18．Who invented the first battery according to the text
A．Marcellus Jacobs. B．Joseph Swan. C．Alessandro Volta. D．Thomas Edison.
19．Why do some fish produce electricity
①To have fun. ②To attack others. ③To look for food. ④To protect themselves.
A．①② B．①③ C．③④ D．②④
20．What can we learn from the text
A．Marcellus Jacobs invented windmills in the 7th century.
B．Diesel generators are often used when the power is on.
C．Lightning can produce electricity.
D．Joseph Swan made his invention in 1879 alone.
05
Glass frogs (青蛙) are not actually made of glass. But their skin is transparent, just like glass. In fact, the skin on the underside of a glass frog is so clear that you can see inside its body. Without using an X-ray machine, you can see the frog’s heart and other organs (器官) . Sometimes you can even see blood or food moving through the body.
The glass frog lives high in the trees above rivers during the dry season. When the rainy season comes, it climbs down to the stream level to produce babies. These unusual-looking frogs can be difficult to find in the rain forests of Central and South America. The clear skin on their fronts and the light green color of their backs often blend in (融入) with the leaves they rest on. Also, they are tiny — just about the size of a coin.
These frogs make up for their small size with an interesting way of catching insects. Scientists believe the glass frog’s back looks like the frog’s eggs. If a fly (苍蝇) flies down for a meal on the frog’s back, it will be in for a surprise when the glass frog opens its mouth.
The glass frog’s real eggs are protected by the males (雄性) . Male glass frogs are very protective of their eggs. To keep away unwanted guests, a male glass frog will try to scare away any other male frog that gets too close. At first, the male frog makes loud noises to warn the other male frog to leave the area. If that does not work, then the frogs may fight with each other until one gives up and leaves. These fights can last for thirty minutes.
根据材料内容选择最佳答案。
21．What does the underlined word “transparent” mean in Chinese
A．有斑点的 B．透明的 C．乳白的 D．浓密的
22．What are the reasons the glass frog is hard to find
a. It bends in with leaves.
b. It seldom makes noises.
c. It moves fast.
d. It’s very small.
A．a, b B．b, c C．c, d D．a, d
23．Why might a fly come near a glass frog’s back
A．The fly might think it’s something to eat.
B．The fly might think the frog is in need of help.
C．The fly might want to lay eggs on the frog’s back.
D．The fly might want to take a rest on the frog’s back.
24．Which paragraph tells how the eggs of glass frogs are protected
A．Paragraph 1 B．Paragraph 2 C．Paragraph 3 D．Paragraph 4
25．What’s the theme (主题) of the text
A．Culture. B．Language. C．Nature. D．History.
06
The four great inventions of ancient China are China’s outstanding contributions to the whole world, and have had a great impact on world’s scientific and cultural exchanges.
Paper-making During the Eastern Han Dynasty around 104 A．D．, a eunuch (太监) of the Imperial Court named Cai Lun invented a new type of paper. It was said that he used bark (树皮), rags (破布) and broken fishing nets as materials to make plant fiber paper suitable for writing. In 105 A．D．, he presented this invention to He Di, the emperor at that time, according to Chinese history.
Printing In the Song Dynasty, Bi Sheng (A．D．1004﹣1048), used clay to make rectangle cubes (长方体), carved a single Chinese character on each of them, and burnt them with fire. Then according to the article content, he arranged the words, put them in an iron frame (框架) to print.The printing skill is named the movable-type printing.
Compass The working people of ancient China invented the compass in their long-term labor practice.They found the characteristic of magnet (磁铁) showing the direction. The earliest compass, Sinan, firstly appeared in the Warring States Period.
Gunpowder The invention of gunpowder began with ancient alchemy (炼丹术) in the Sui Dynasty and Tang Dynasty. In order to refine pills for immortality (永生), alchemists constantly update the methods of alchemy, which finally led to the invention of gunpowder. In Tang Dynasty, the gunpowder began to be applied (应用) to the military affairs (军事).
Which of the following is RIGHT according to the passage
A．Paper was firstly invented in the Eastern Han Dynasty.
B．Cai Lun invented a new type of paper in 105 A．D．.
C．Cai Lun presented his invention to the emperor about a year after he invented paper.
D．Cai Lun used bark, rags and broken fishing nets and clay to make paper.
27．Who was the inventor of compass
A．The working people of ancient China. B．He Di. C．Bi Sheng. D．Sinan.
28．Which is the latest of the four great inventions
A．Paper-making. B．Printing. C．Compass. D．Gunpowder.
29．What was the initial (最初的) purpose of the ancient alchemy
A．To make gunpowder to apply to the military. B．To make paper suitable for writing.
C．To find direction while working. D．To make medicine that could help live forever.
30．Which part of a newspaper is the passage most probably from
A．Science B．Nature C．Sports D．Education
07
Guess which city will be the host of the 2022 Winter Olympic Games The two candidates, Beijing (together with Zhangjiakou in Hebei) and Almaty in Kazakhstan are waiting to find out who will win.
The International Olympic Committee Evaluation Commission (评估团) visited Beijing and Zhangjiakou from March 24 to 28, 2015 to see whether the two cities meet the standards for hosting the Games.
If Beijing wins, it will be the first city in history to organize both summer and winter Olympic Games.
The nearly perfect organization of the 2008 Summer Olympic Games showed the city’s abilities. The city would make use of old competition areas instead of building new ones. Beijing plans to host most of the ice events in six existing venues (赛场) including the Water Cube.
Snow events will be held in Chongli County in Zhangjiakou. The county, about an hour’s ride from Beijing, has over four months’ snowfall a year, which would provide enough snow for the competitions. Moreover, the winter temperature there is suitable for the Winter Olympic Games.
But a problem may get in the way — haze (雾霾). It will be a disadvantage for Beijing.
Competition for holding the Olympics is always strong because it influences the host city and its people deeply.
“If Beijing wins, it will help improve transportation in the two cities and reduce Beijing’s air pollution,” said Beijing mayor (市长) Wang Anshun. “Around 600,000 jobs will be created. The events will also encourage more young people to take part in winter sports.”
根据材料内容，选择最佳答案。
31．What does the underlined word “candidates” mean
A．参赛国 B．获胜者 C．主办国 D．候选者
32．How long did The International Olympic Committee Evaluation Commission spend visiting Beijing and Zhangjiakou
A．For five days. B．For four days. C．For three days. D．For two days.
33．What is the biggest challenge for Beijing to host the Winter Olympic Games
A．The large population. B．The crowded traffic.
C．The polluted air. D．The warm weather.
34．What will the Winter Olympic Games NOT bring to Beijing
A．Lots of jobs. B．Air pollution.
C．More sports lovers. D．Better transportation.
35．Which of the following is NOT true
A．Beijing has hosted Summer Olympic Games.
B．It’s about an hour’s ride from Chongli to Beijing.
C．Beijing has hosted both summer and winter Olympic Games.
D．Competition for holding the Olympics influences the host city and its people deeply.
08
Armenia lies in east-central Asia. It has produced an interesting culture. The culture of Armenia has parts of many different areas. Another influence on their culture is the fact that so many other countries have ruled Armenia. At different times, Turkey, Russia, Greece and Persia ruled Armenia. Each influenced Armenia in different ways. A good example of this is Armenian folk music.
To most people, Armenian folk music sounds like Middle Eastern music. It is played with a drum and most importantly, the Duduk,an ancient woodwind (木管乐器) instrument. Throughout history, other instruments from other parts of the world were added.
There was a young Armenian boy who loved folk music. He loved it so much and he brought it to the rest of the world. His name was Aram Khachaturian. Growing up in Armenia, young Aram loved the folk music he heard each day. As a child, he never studied music. Young Aram tried to understand the feeling of the music. Then he left Armenia to study music in Moscow Russia’s capital. He went to a very good music school there.
Throughout his life. Aram Khachaturian wrote lots of music for concerts, plays, and even movies. The United Nations named him one of the world’s best musicians of the 20th century. And his most famous work is a very fun piece of music. It is called The Sabre Dance and features (使突出) the music and culture of Armenia and its neighbors.
根据材料内容，选择最佳答案。
36．According to the passage, ________ didn’t rule Armenia.
A．America B．Greece
C．Turkey D．Russia
37．What is a Duduk ________
A．A drum. B．A piano.
C．A guitar. D．A woodwind instrument.
38．In which country did Aram study music ________
A．Armenia. B．Moscow.
C．Russia. D．Germany.
39．Which of the following is TRUE ________
A．Armenia was affected by many cultures from other countries.
B．One of Aram's most famous works is called The Sabre Dance.
C．Aram wrote some music for movies.
D．Aram never included Armenian music in his works.
40．What’s the best title for the passage ________
A．A Great Musician—Aram Khachaturian
B．The History of Armenia
C．Armenian Culture: Aram Khachaturian
D．Armenian Folk Music
09
We have seen lots of science fiction movies about aliens. People travel to stars and even fight with aliens in the movies. But are there real aliens in the universe（宇宙） Most of us think it is impossible, just like fairy tales. But the answer of some scientists is yes. So they have been searching for aliens in outer space for many years. They hope to find life signs of aliens.
Some scientists are used to using radio telescopes（望远镜）to search for aliens in space. In order to find aliens, they have worked hard for over half a century, but so far they have found nothing. Then some scientists guessed aliens might not want to connect us, but aliens could answer our messages. So some scientists sent radio signals into the universe. They hope one day they would be picked up by alien technology. These scientists want to prove（证明）that we are not alone in the universe.
But what should we do if the “alien phone” rings one day Should we answer it Stephen Hawking, the famous physicist, thought it could be dangerous to connect aliens. He said that the main purpose of aliens’ visiting to the earth could be searching for our resources（资源）. But other scientists think we have no need to worry. David Morrison, a NASA scientist, said, “If an alien radio signal reaches the earth from a planet thousands of light-years away, then they almost surely have solved all the problems we still have including the short of resources. Maybe they are much smarter than us, but why do they want to hurt us I think we can try to connect them.”
根据短文内容，选择最佳答案。
41．________ scientists believe there are aliens.
A．Few B．All C．Most D．Some
42．Scientists have worked hard to find aliens for ________.
A．50 years B．more than 50 years
C．40 years D．more than 100 years
43．What is Stephen Hawking’s opinion ________
A．Aliens are friendly. B．Aliens are dangerous.
C．Aliens can’t be found. D．Aliens have been on the earth.
44．Why does David Morrison think we want to connect aliens ________
A．Because we want to find aliens.
B．Because aliens have many skills.
C．Because we want to help aliens.
D．Because aliens are much smarter than us.
45．What’s the best title for the passage ________
A．Are We Alone B．Stephen Hawking’s Idea
C．Protect Our Earth D．How to find aliens
10
One day we went to pick up our grandson Mark at his school. It was a beautiful spring day so we went to the garden.
We noticed how sad Mark was. He said, “There is nothing special about me. Well, I am smaller than my elder brother and I am bigger than my younger brother.” I knew he felt that he, the middle son, was not getting the same attention.
We walked a little farther into the woods when Mark asked me if we could throw rocks into the brook（小溪）to see which one would go the farthest.
“OK,” I said.
Mark said, “I am going to throw the biggest rock, because I know it will go the farthest.” Mark picked up the largest rock he could find and threw it. Although it made a very big splash（飞溅的水）, it didn’t go very far. Mark thought for a minute and said, “I am going to throw a little rock instead.” He picked up a little stone and threw it but it didn’t go very far because it was too little.
I thought this was a very good opportunity to teach. I said, “Why don’t you pick up a medium-sized rock and see what happens ”
Mark picked up a medium-sized rock and threw it. Mark said, “Look, the middle-sized rock went the farthest!”
I smiled, “You see, Mark, you are like the middle-sized rock. In this situation the little rock was too light, the big rock was too heavy, but the middle-sized rock was just right.”
“So, I am special ”
“Yes, Mark, everyone and everything is special and has a special purpose, especially you.”
根据材料内容选择最佳答案。
46．How many children were there in Mark’s family
A．1 B．2 C．3 D．4
47．What made Mark sad
A．His being the shortest in height among brothers. B．His getting less attention at home.
C．His low rank in his class. D．His lack of chance to visit gardens.
48．Why didn’t the grandpa comfort Mark when he first noticed that Mark was sad
A．Because he was waiting for a good chance to teach.
B．Because he had no idea how to help Mark at that time.
C．Because he knew Mark would cheer up quickly.
D．Because he thought what Mark said was not true.
49．Which is the best word to describe Mark’s grandpa
A．Brave. B．Honest. C．Serious. D．Wise.
50．What’s the passage mainly about
A．A person may do everything on purpose. B．Anything larger isn’t necessarily better.
C．One can go farthest without pain. D．Everyone is special as a matter of fact.
参考答案：
1．D 2．C 3．C 4．D 5．A
【导语】本文主要介绍了今年生活中最好的发明。
1．细节理解题。根据“Its size helps it get into fewer accidents.”可知它的尺寸有助于减少事故。故选D。
2．细节理解题。根据“So scientists grew a special sweet potato there. It has lots of vitamin A. It tastes good, too!”可知这种土豆富含维生素A，所以它被称为“特殊的甜土豆”。故选C。
3．细节理解题。根据“The UNICEF Kid Power Band lets kids in the US get points for exercise. More and more kids are interested in it.”可知它让美国的孩子们获得锻炼分数，越来越多的孩子对它感兴趣。故选C。
4．细节理解题。根据“It is a light bulb that can float by using electricity and magnet”可知它是一个灯泡，可以通过使用电力和磁力来漂浮。故选D。
5．细节理解题。根据“Most man-made body parts are not fun. They do the job. That’s it. But kids want to play, too. Iko helps solve this problem”可知它帮助孩子解决了玩的问题。故选A。
6．B 7．A 8．D 9．A 10．D
【导语】本文介绍了一个由Mandy所制作的视频，以及一些关于视频的评论。
6．细节理解题。根据“And ‘speak out’ is the first step of learning English.”可知，用英语说是学习英语的第一步。故选B。
7．细节理解题。根据“Pam/ Henan / 2 hours ago”可知，Pam的评论时间是最晚的，因此最新一条评论来自Pam。故选A。
8．细节理解题。根据“Nora/ Henan/ 15 days ago”和“I sometimes can’t follow my English teacher in class.”可知，Nora的问题是课堂上听不懂英语老师所讲。故选D。
9．推理判断题。根据“Nita/ Jilin/ 1 month ago”和“I want my children to join you and I will ask them to attend your lessons online...”可推知，Nita是一位母亲。故选A。
10．推理判断题。根据“Spoken English Learning”和“#221: How should we improve our spoken English (By Mandy).”可知，本文是关于英语口语学习的，推知可以在网站的教育板块找到。故选D。
11．D 12．C 13．A 14．B 15．D
【导语】本文主要介绍了四个人的暑假活动。
11．细节理解题。根据“We spent ten days there so that we could visit all the places of interest in the city.”可知Jane花费了十天时间，故选D。
12．细节理解题。根据“I spent my summer vacation with my grandparents in the countryside”可知Alice的祖父母住在乡村，故选C。
13．细节理解题。根据“But I was surprised when I visited my hometown this summer...I was sad to hear that.”可知Maria看到自己家乡的变化是很惊讶和伤心的，故选A。
14．细节理解题。根据“but this year I just stayed at home because my little cousin came.”可知Linda今年暑假待在家，故选B。
15．推理判断题。根据“because my little cousin came. He was really a cute boy. I played with him and taught him many things such as playing basketball and cooking. We also went swimming. And in the swimming pool, he was my teacher!”（因为我的小表弟来了。他真是个可爱的男孩。我和他一起玩，教他很多东西，如打篮球和烹饪。我们还去游泳了。在游泳池里，他是我的老师！）可推知Linda的表弟很擅长游泳，故选D。
16．D 17．A 18．C 19．D 20．C
【导语】本文主要讲述了人类发明的四种发电方式和自然界存在的发电方式。
16．细节理解题。根据“Marcellus Jacobs first thought of using the power of windmills to produce electricity in 1930.”可知，Marcellus Jacobs在1930年第一次想到利用风车发电。故选D。
17．细节理解题。根据“Diesel generators are often used in some shops, hotels and restaurants to produce electricity when the power is off.”可知一些商店、酒店和餐馆经常使用柴油发电机在断电时发电。故选A。
18．细节理解题。根据“In 1800, Alessandro Volta succeeded in building a voltaic pile to produce electricity. His voltaic pile was the first battery in the world.”可知Alessandro Volta发明了第一块电池。故选C。
19．细节理解题。根据“For example, some fish produce enough electricity to attack other animals, while others produce electricity to stop other animals from attacking them.”可知一些鱼产生足够的电来攻击其他动物，而另一些鱼产生电来阻止其他动物攻击它们，因此有些鱼会发电是为了保护自己，攻击别人。故选D。
20．推理判断题。根据“Not just lightning, some animals also produce electricity.”可知闪电能发电。故选C。
21．B 22．D 23．A 24．D 25．C
【导语】本文是一篇说明文。文章介绍了玻璃青蛙的一些知识。
21．词句猜测题。根据下文“But their skin is transparent, just like glass. In fact, the skin on the underside of a glass frog is so clear that you can see inside its body. Without using an X-ray machine, you can see the frog’s heart and other organs (器官) . Sometimes you can even see blood or food moving through the body.”可知，玻璃青蛙的皮肤就像玻璃一样，下侧的皮肤那么清晰以致于你可以看到它的身体内部。不用X光机，你就能看到青蛙的心脏和其他器官。有时你甚至可以看到血液或食物在体内流动，所以可推测玻璃青蛙的皮肤是透明的，即划线的“transparent”是“透明”的意思。故选B。
22．细节理解题。根据“The clear skin on their fronts and the light green color of their backs often blend in (融入) with the leaves they rest on. Also, they are tiny — just about the size of a coin.”可知，它们正面的透明皮肤和背部的浅绿色常常与它们所栖息的树叶融为一体。而且，它们很小，只有硬币那么大，所以推知玻璃青蛙很难被找到的原因是：它与树叶融为一体；它很小。故选D。
23．推理判断题。根据“If a fly (苍蝇) flies down for a meal on the frog’s back, it will be in for a surprise when the glass frog opens its mouth.”可知，一只苍蝇靠近玻璃青蛙的背部觅食，当玻璃青蛙张开嘴时，它会大吃一惊，所以推知，苍蝇可能会认为玻璃青蛙是吃的东西才会飞到玻璃青蛙的背部。故选A。
24．细节理解题。根据第四段“The glass frog’s real eggs are protected by the males (雄性) . Male glass frogs are very protective of their eggs.”可知，玻璃青蛙的卵受到雄性玻璃青蛙的保护。雄性玻璃青蛙对卵有很强的保护作用。所以，第4段讲述了如何保护玻璃青蛙的卵。故选D。
25．主旨大意题。通读全文可知，文章讲了关于玻璃青蛙的一些知识，是关于自然界的话题。故选C。
26．C 27．A 28．B 29．D 30．A
【导语】本文主要讲述了中国的四大发明。
26．推理判断题。根据“During the Eastern Han Dynasty around 104 A.D., a eunuch of the Imperial Court named Cai Lun invented a new type of paper.”和“In 105 A.D., he presented this invention to He Di, the emperor at that time, according to Chinese history.”可知，蔡伦在发明纸大约一年后把他的发明呈献给了皇帝，故选C。
27．细节理解题。根据“The working people of ancient China invented the compass in their long-term labor practice.”可知，指南针的发明者是中国古代的劳动人民，故选A。
28．细节理解题。根据“During the Eastern Han Dynasty around 104 A.D.,…Cai Lun invented a new type of paper.”，“In the Song Dynasty, Bi Sheng (A.D.1004﹣1048), used clay to make rectangle cubes…”，“The earliest compass, Sinan, firstly appeared in the Warring States Period.”和“The invention of gunpowder began with ancient alchemy in the Sui Dynasty and Tang Dynasty.”可知，活字印刷术是四大发明中最晚的，故选B。
29．细节理解题。根据“In order to refine pills for immortality, alchemists constantly update the methods of alchemy, which finally led to the invention of gunpowder.”可知，古代炼金术最初的目的是制造可以帮助长生不老的药物，故选D。
30．推理判断题。根据“The four great inventions of ancient China are China’s outstanding contributions to the whole world, and have had a great impact on world’s scientific and cultural exchanges.”并通读全文可知，本文主要讲述了中国的四大发明，所以最有可能来自报纸的科学部分，故选A。
31．D 32．A 33．C 34．B 35．C
【导语】本文主要介绍了2022年冬季奥运会的申办，并介绍了北京的劣势以及申办成功会给北京带来的效应。
31．词义猜测题。根据“The two candidates, Beijing (together with Zhangjiakou in Hebei) and Almaty in Kazakhstan are waiting to find out who will win”可知，此处介绍候选国都有哪些，所以划线单词表示“候选者”，故选D。
32．细节理解题。根据“The International Olympic Committee Evaluation Commission (评估团) visited Beijing and Zhangjiakou from March 24 to 28, 2015”可知，在北京和张家口考察了5天，故选A。
33．细节理解题。根据“But a problem may get in the way — haze (雾霾). It will be a disadvantage for Beijing”可知，最大的挑战就是空气污染——雾霾问题，故选C。
34．细节理解题。根据“If Beijing wins, it will help improve transportation in the two cities and reduce Beijing’s air pollution”可知，冬奥会会帮助减少北京的空气污染，而不是给北京带来空气污染，故选B。
35．推理判断题。根据“If Beijing wins, it will be the first city in history to organize both summer and winter Olympic Games”可知，如果北京获得主办权，它将成为历史上第一个举办过夏季和冬季奥运会的城市，而不是已经举办过夏季和冬季奥运会，C表述错误，故选C。
36．A 37．D 38．C 39．A 40．C
【导语】本文是一篇记叙文。文章主要讲的是亚美尼亚文化受多国影响的特点，并列举了阿拉姆在音乐上融合多国的文化，取得了巨大成就的事例。
36．细节理解题。根据“At different times, Turkey, Russia, Greece and Persia ruled Armenia.”可知，土耳其、俄罗斯、希腊和波斯在不同的时期统治亚美尼亚。故选A。
37．细节理解题。根据“It is played with a drum and most importantly, the Duduk,an ancient woodwind instrument”可知，Duduk是一种木管乐器。故选D。
38．细节理解题。根据“Young Aram tried to understand the feeling of the music. Then he left Armenia to study music in Moscow Russia’s capital.”可知，他离开亚美尼亚到俄罗斯首都莫斯科学习音乐。故选C。
39．推理判断题。根据“Another influence on their culture is the fact that so many other countries have ruled Armenia.”可知，另一个影响他们文化的事实是在不同时期亚美尼亚被不同的国家统治，所以推断亚美尼亚文化受到其他国家许多文化的影响。故选A。
40．最佳标题题。根据全文内容可知本文主要讲的是亚美尼亚的文化受多国影响的特点，并用阿拉姆在音乐上融合多国文化特点取得巨大成就的事例来阐明亚美尼亚的文化特点。故选C。
41．D 42．B 43．B 44．D 45．A
【导语】本文是一篇说明文。这篇短文主要讲述了外星人是否存在以及不同的人对外星人的看法。
41．细节理解题。根据“But are there real aliens in the universe（宇宙） …But the answer of some scientists is yes.”可知一些科学家给出了肯定的回答，也就是他们认为有外星人的存在。故选D。
42．推理判断题。根据“In order to find aliens, they have worked hard for over half a century, but so far they have found nothing.”可知，为了寻找外星人，他们辛苦了半个多世纪，但至今一无所获。半个多世纪也就是50多年。故选B。
43．细节理解题。根据“Stephen Hawking, the famous physicist, thought it could be dangerous to connect aliens.”可知著名物理学家Stephen Hawking认为联系外星人可能很危险。故选B。
44．细节理解题。根据“Maybe they are much smarter than us, but why do they want to hurt us ”可知，他认为也许外星人比我们聪明得多，所以人们想要联系外星人。故选D。
45．最佳标题题。结合全文内容，文章主要讲述了科学家在努力与外星人联系，同时也介绍了科学家对此的不同看法，由此可知本文的标题应为“我们是孤单的吗？”。故选A。
46．C 47．B 48．A 49．D 50．D
【导语】本文讲述了作者通过向水里丢石子，以此告诉他的孙子每个人都是特别的，帮助他不再难过的故事。
46．推理判断题。根据“‘Well, I am smaller than my elder brother and I am bigger than my younger brother.’ I knew he felt that he, the middle son, was not getting the same attention.”可知，Mark上有哥哥，下有弟弟，他家共三个孩子。故选C。
47．细节理解题。根据“We noticed how sad Mark was.”和“I knew he felt that he, the middle son, was not getting the same attention.”可知，我知道他觉得自己排行老二，没有得到同样的关注。故选B。
48．细节理解题。根据“I thought this was a very good opportunity to teach.”可知，他在等一个好的机会。故选A。
49．推理判断题。根据“I smiled, ‘You see, Mark, you are like the middle-sized rock. In this situation the little rock was too light, the big rock was too heavy, but the middle-sized rock was just right.’ ‘So, I am special ’ ‘Yes, Mark, everyone and everything is special and has a special purpose, especially you.’”可知，作者用丢石子的方式，开导了Mark，告诉他每个人都是特别的，因此Mark的爷爷是智慧的。故选D。
50．主旨大意题。根据“everyone and everything is special and has a special purpose, especially you.”以及通读全文可知，本文告诉我们：我们每个人都是特别的。选项D“事实上，每个人都很特别。”符合语境。故选D。