Unit4Amazing Science Topic 2 同步练习题（含答案）仁爱科普版九年级英语上册

Unit 4 Topic 2 同步练习题
基础部分
一、根据汉语意思写出下列单词的正确形式
1．On the Mid-Autumn Day, people enjoy (欣赏) the moon at night.
2．Linda likes traveling very much and now she is planning her trip with (兴奋).
3．When Mary got to school, she (意识到) that her schoolbag was at home.
4．An adult elephant (重量是……) many times more than a baby one.
5．A wonderful program (上演) tonight.
6．We don’t think it’s too difficult to (掌握) a foreign language.
7．Please be careful about your camera, or it will be (偷) sooner or later.
8．Alice likes dancing and she dreams of being a ballet (舞蹈家) in the future.
9．Yuan Longping is called “Father”of Hybrid rice, and his achievements go (超出) China.
10．The (旅行) ends in the ancient city of Marrakesh.
二、 用所给词的正确形式填空
11．Since the big fire has already been under control, no more firemen (send) there.
12．If you don’t work hard, you (ask) to leave sooner or later.
13．It’s said that the new bridge (complete) at the end of 2025.
14．Jack finally got A in the English exam. He looked at the exam result with . (excite）
15． speaking, smoking is harmful to our health. (general)
三、选词填空 用所给词的适当形式填空。每词限用一次。
attend；steal；regret；master；admire
16．My teacher explains the grammar so clearly that we all it already.
17．Everyone in my town the moon on Mid-Autumn Day.
18．Tom’s bike last week. So he had to buy a new one.
19．—Where are your friends
—They a meeting in the office.
20．You later if you do it like this.
综合部分
阅读理解
A
A quasar (类星体) is an extremely bright object with a super-massive (超大质量的) black hole. About a million quasars have been known to humans. Quasar J0529-4351 is one of them, with 12 billion light years from the earth.
We have been able to see Quasar J0529-4351 since 1980. But it was so bright that people mistook it for a foreground star (前景恒星). In 2023, scientists finally identified (确认) it as a quasar as well as the brightest object in the universe (宇宙), 500 trillion (万亿) times brighter than the sun. In 2024, a study on the quasar came out in Nature Astronomy (《自然·天文学》). It was done by Australian scientist Christian Wolf and his team.
According to the recent study, Quasar J0529-4351 has a huge “stomach”. Like other quasars, it keeps taking in gas and dust in the space. In fact, it has the largest accretion disk (吸积盘) in the universe. It “eats” about as much as the sun’s mass (质量) every day, which makes it grow very fast. And we shouldn’t be surprised at how bright it is, because the brightness has much to do with how much it “eats”.
However, Quasar J0529-4351 is not the largest object. TON 618, found in 1957, is one of the largest black holes. It can hold 66 billion stars the size of the sun inside, while Quasar J0529-4351 is about 19 billion times larger than the sun.
Scientist have already learned that a black hole is formed when a star collapses (坍塌) on itself. And it grows by taking in other objects, including other black holes. But they still don’t know how super-massive black holes come into being. Scientists hope that studying quasars like this one will help them understand more about super-massive black holes. They also believe that there are probably more unusual quasars out there, waiting to be discovered.
21．When did scientists identify Quasar J0529-4351
A．In 1957. B．In 1980. C．In 2023. D．In 2024.
22．What does the underlined word “It” in Paragraph 2 refer to
A．Quasar J0529-4351. B．The foreground star. C．The study. D．Nature Astronomy.
23．Which of the following is TRUE about Quasar J0529-4351
A．It is 12 billion light years from the sun. B．It is 500 trillion times brighter than the sun.
C．It can hold 66 billion stars the size of the sun. D．It is about 19 billion times larger than TON 618.
24．What does the last paragraph mainly tell us
A．When a star collapses. B．How a black hole grows.
C．Why scientists study quasars. D．What will be discovered next.
25．Which could be the best title for the text
A．A Newly Seen Quasar B．Secrets of the Universe
C．Super-massive Black Holes D．Brightest Quasar Ever Seen
B
Today is December 15, 2031. Influenced by the launch of the first manned mission to Mars next month, you will most likely get a gift card for a space trip.
The interest in space trips has grown steadily among people since such a trip began. Therefore, the market has grown much larger this year since the official announcement of the Mars mission. More low-cost space lines have entered the market and you can now find flights for such a trip for as low as $3,495. It’s very reasonable.
Space tourism is one of the markets that have developed fast during the last decade, with the opening of the Starlight Hotel on the moon as well as the low orbital hotels that started accepting guests. However, accommodation in space is still expensive for the average household, so the suborbital (亚轨道的) flights with thirty-minute weightlessness during the three-hour flight will be the most popular trip.
However, the space lines might in the future face fierce (激烈的) competition with the appearance of space elevators (太空升降舱), like the one that is projected to start construction within two years. Once it is fully functional, it will start to ship cargo to space. But it will accept passengers as soon as possible to get back the large investment. Even if the elevator becomes successful, it will take several years before there are more elevators in the world to get in the competition for space traffic with the space lines.
Those who are looking for a little bit of adventure and have extra money to spend may want to consider a suborbital flight in space. While a suborbital flight may not be the space mission that you have always dreamed of, it will give you the rare opportunity to see what our planet looks like in a high-altitude flight outside our atmosphere. So before you enjoy a trip by elevator to space, enjoy a suborbital flight first.
26．From Paragraph 1, what will happen in January, 2032
A．A gift card will be taken to Mars. B．Mars will be explored for the first time.
C．Man will go to Mars for the first time. D．An affordable space trip will come true.
27．The underlined word “average” means “________” in Chinese.
A．普通的 B．高收入的 C．低成本的 D．低收入的
28．What is the space elevators purpose in accepting passengers as soon as possible
A．To ship cargo to space.
B．To get in the competition between space lines.
C．To start the construction of more space elevators.
D．To get back the large investment.
29．Which of the following is NOT TRUE according to the passage
A．Space tourism has developed fast during the last ten years.
B．A suborbital flight may be the space mission that you have dreamed of.
C．The suborbital flights will be the most popular trip for some time.
D．Even though the elevator becomes successful, we will still have to wait for a few years to see more elevators come out.
30．We can know from the passage that ________.
A．the low orbital hotels have opened since a space trip began
B．within two years, space elevators will begin to ship cargo and people to space
C．during the suborbital flights, you will experience 30 minutes’ weightlessness
D．if you want to satisfy your curiosity, you may try a suborbital flight
C
Have you ever imagined what the house will be like in the future 31 We know for certain that nothing is impossible. One thing is for sure, that is, the house will be as green as possible.
The scientists will design a kind of house which is just like a lizard (蜥蜴). 32 The house will turn white under the bright sun so that it can be protected from strong heat. When it is on dark days, it turns dark and takes in light and heat as much as possible to produce energy.
Many architects (建筑师) in the world want to build a “tree house”. Like a leaf, the surface of the house collects sunlight during the day. 33 It even can produce fresh air for the house. The “root” of the house is deep under the ground. It uses soil to control the temperature inside the house.
Perhaps houses will be built as much about the future of food production as architecture. It has gardens on the outside wall of the house. 34 Just need to walk outside and collect the vegetables and fruits every morning.
Looking to the future isn’t the only way to be green. 35 Ancient techniques can help us to save energy in some ways. For example, we can use a chimney as an air conditioner because it is easier for hot air to flow out the chimney.
A．So vegetables and fruits can be planted on the wall.
B．It’s also a good way to learn from the past.
C．It can change its color as the weather changes.
D．The energy can be used to heat water, produce electricity.
E．Maybe it has gardens on its walls, or a fish pool under its floor.
五、 选词填空
根据短文内容，用方框中所给词的正确形式填空，使短文完整、正确。
with sure child because be pets they also modern swim
I have a pen pal. He is from Shanghai. He tells me that he will 36 a teacher in ten years. He loves teaching 37 . He will work in Shenzhen. Because he went to this 38 city last summer and fell in love 39 it. He says he won’t live in an apartment in ten years alone 40 he will feel lonely. He likes pets very much. He thinks they are very cute. But he can’t keep any 41 now. Because his mother hates 42 . So in ten years, he’ll have lots of different pets. He 43 likes sports. He will probably go 44 and skating. He thinks he’ll go to Hong Kong for holiday. I am 45 his dream will be able to come true.
六、补全对话
根据下面对话的情境，在每个空白处填入一个适当的语句，使对话意思完整。
A: I read a book today.
B: 46
A: It’s about a strange travel to Mars.
B: 47
A: Of course. We can go there by spaceship. But I don’t think we can live there.
B: Neither do I. We can hardly stand there. 48 .
A: That’s true. Maybe people can spend their holidays there in the future.
B: That must be great fun. 49 .
A: Your dream will come true.
B: Thank you. By the way, may I borrow your book
A: Certainly. 50 .
B: Thanks a lot.
参考答案
1．admiring
2．excitement
3．realized
4．weighs
5．will be shown
6．master
7．stolen
8．dancer
9．beyond
10．journey
11．will be sent
12．will be asked
13．will be completed
14．excitement
15．Generally
16．have mastered 17．admires 18．was stolen 19．are attending 20．will regret
21．C 22．C 23．B 24．C 25．D
26．C 27．A 28．D 29．B 30．C
31．E 32．C 33．D 34．A 35．B
36．be 37．children 38．modern 39．with 40．because 41．pets 42．them 43．also 44．swimming 45．sure
46．What’s it about 47．Do you think we can travel to Mars 48．I can’t believe we can live there 49．I wish I could fly to Mars one day 50．Here you are