Unit3 Electricity 第1课时（解析版）
一、单项选择
1．She is a _______ girl and she does her homework _______.
A．careful; careful B．careful; carefully
C．carefully; careful D．carefully; carefully
2．The word “careless” has a suffix. Which of the following word does NOT have a suffix
A．careful B．visitor C．meaning D．certain
3．It’s _______ of you to knock on the door before you enter someone’s room.
A．possible B．impossible C．polite D．impolite
4．Kitty is a _________ girl. She made many mistakes in the Maths test.
A．careful B．carefully C．careless D．carelessly
5．Eat less and exercise more.You will be healthy and fit ________.
A．in a way B．on the way
C．in this way D．by the way
6．Some diseases have something to do with your eating habits. So it’s important for you to have a balanced diet.
A．connect to B．are related to C．are linked D．do harm to
7．Sam is always polite to others. His parents ________ him.
A．are worried about B．are proud of C．are patient with D．are careful with
8．Wu Fei from Class 18 is very interesting, he is tall and strong. When he walks ________ the desk, he always knocks the books and pens ________ the floor.
A．past; onto B．pass; onto C．past; off D．pass; onto
9．Betty writes ________ than ________ student in her class.
A．more carefully; any B．more carefully; any other
C．more careful; any other D．more careful; the other
10．—What happened when Newton ________ under an apple tree
—An apple fell ________ the tree and dropped onto his head.
A．was playing; down from B．was playing; off from
C．is playing; behind D．played; off
二、短文选词填空
从下面方框中选出 10 个单词，并用其适当形式填入短文空格内，使短文意思正确、通顺（每词限用一次）。
all refuse good success bored none both sleep hard interest solve use
My classmates often ask me how I feel to be a top student. They all seem to admire (羡慕) me or even envy (嫉妒) me. They say they want to know what help me ____11____.However, I am not as happy as I seem to be. I have many problems without ____12____. The first is that I often feel stressed. I often feel some of my lessons ____13____. I have to face too many exercises that I don’t enjoy at all. I am asked to do them, but I don’t think they are ____14____. These exercises keep me busy even on the weekends. I must stay up late to finish them. As a result, I often feel ____15____ in the day. Secondly, I always feel that ____16____ of my teachers and classmates understand me. I try to be friendly to them. And I try to be honest and modest. But some of them say I look down on the students who don’t do as ____17____ as me in lesson, though I spend lots of time helping them. I don’t know why I can ____18____ have true friends. I felt terrible when one of my classmates ____19____ to play and work with me. And I feel lonely.
The two problems _____20_____ make me upset. I just don’t know how to solve them.
三、阅读单选
You want to run across the street to catch the bus which is leaving soon But wait! You’d better not. If a policeman sees you, you’ll have to pay a fine (罚款).
New traffic laws (法律) say that if people cross the street when the light is red, they will pay a fine as much as 50 yuan.
Traffic accidents killed more than 104,000 people in China last year. Chinese cities have more cars than ever. Drivers and pedestrians (行人) must work together to make the streets safer.
The law has new rules for drivers and pedestrians. Drivers have to slow down when they are close to crosswalks. If people are in a crosswalk, cars must stop to let them pass.
There are rules for bus drivers, too. If bus drivers smoke, drink or make phone calls while driving, they can be fined. Buses that carry too many people are also against (违反) the law.
Pedestrians will have to walk more safely under the new law. They must cross streets at crosswalks. Also, they shouldn’t climb over the fences (栅栏) along streets.
Do you ride a bike to school It’s not a good idea to carry classmates on the back. You could be fined 50 yuan. And stay in the bike lane (车道) when you’re riding. The big roads are for cars and buses.
Do you like to ride your uncle’s motorbike When you put on your helmet (头盔) ask him to put one on, too. People on motorbikes must wear helmets, the new law says. If they don’t, they’ll have to pay 200 yuan.
Do you ride in cars often Don’ t forget to put on your seat belt (安全带) even if you’ re going for a short taxi ride. It could save your life.
If you see a hit-and-run (肇事逃逸), tell the police. They may give you a reward (奖赏). And don’t be afraid to help people to the hospital if they are hurt in an accident. Don’t worry about money. The new law says that doctors must take care of them even if they can’t pay right away.
21．What does the word “crosswalk” mean in Chinese
A．过马路 B．人行横道 C．立交桥 D．车行道
22．If you ride a bike to school, ________.
A．you can carry classmates on the back B．you can ride on big roads
C．you must stay in the bike lane D．you can’t drink
23．When you ride in a car, the first thing you must do is________.
A．to put on the helmet B．to pay the driver
C．to put on the seat belt D．to see if it carries too many people
24．What can we learn from the passage
A．The law has rules only for drivers.
B．Chinese cities have more cars than other cities in the world.
C．People can pay after the doctors take care of them.
D．If your uncle carries you on his motorbike, only you need to wear a helmet.
四、完型填空
Choose the words or expressions and complete the passage (选择最恰当的单词或词语完成短文）：
Ever since early this century, electricity has become an essential part of our modern life. Almost all the activities of human beings depend___25___electricity. For example, we need electricity to run our machines. We need electricity to light our lamps and to heat our houses.
We need electricity to cook our meals. Even a lot of entertainment such as TV, tape recorders and films need electricity. We will not___26___to say that the development of our society depends entirely on electricity.
If there were no electric power, the world would be a different one. For example, almost all the machines had to stop___27___. As a result, we had to use our hands to produce goods. In the evening, we had to live in darkness and we couldn’t play or work. The development of our modern life had to___28___or even stop.
Therefore, we should make great effort to stop wasting the electricity. We should turn off the lights when no one is in the room. We should switch off___29___such as TV or tape recorder when no one is watching or listening.___30___, we should find new ways to generate more electricity so that we may have abundant supply of it.
25．
A．to B．on C．from D．of
26．
A．hesitate B．stop C．hesitation D．hesitating
27．
A．run B．running C．to run D．runs
28．
A．speed up B．connect to C．stitch off D．slow down
29．
A．electricity B．wires C．the electronic appliances D．the electric appliances
30．
A．Because B．Furthermore C．But D．Though
参考答案：
1．B
【详解】
句意：她是一个认真的女孩，她做作业很认真。
考查形容词和副词的用法。careful认真的，形容词；carefully认真地，副词，根据第一个空前的“a”和空后的“girl”可知，第一个空应该用形容词作定语，排除C和D，由第二个空前的“does her homework”可知，第二个空应该用副词修饰动词，排除A，故选B。
2．D
【详解】
题意：careless这个单词含有一个后缀，下面哪个单词没有后缀
考查构词法。careless不小心的，是由单词“care”和后缀“less”构成的。careful小心翼翼的，是由单词“care”和后缀“ful”构成的。visitor参观者，是由单词“visit”和后缀“or”构成的。 meaning意义，是由单词“mean”和后缀“ing”构成的。certain肯定的，没有后缀。故选D。
3．C
【详解】
句意：在你进入别人的房间之前敲门是礼貌的。
考查形容词辨析。possible可能的；impossibl不可能的；polite可礼貌的；impolite不礼貌的。根据“knock on the door before you enter someone’s room.”可知进入别人的房间之前敲门是礼貌的，故选C。
4．C
【详解】
句意：基蒂是个粗心的女孩。她在数学考试中犯了许多错误。
考查词汇辨析。careful仔细的；carefully仔细地；careless粗心大意的；carelessly粗心大意地。根据“a ... girl”可知用形容词作定语，结合“She made many mistakes in the Maths test.”可知犯了很多错误，是粗心的。故选C。
5．C
【详解】
句意：少吃多运动。这样你会很健康。
考查短语辨析。in a way某种程度上；on the way在路上；in this way用这种方式；by the way顺便说一下。根据“Eat less and exercise more.”可知，用这种方式你会很健康。故选C。
6．B
【详解】
句意：有些疾病与你的饮食习惯有关。所以对你来说有一个均衡的饮食很重要。
考查同义替换。connect to连接；are related to与……有关；are linked关联；do harm to对……有害。结合语境和下一句“So it’s important for you to have a balanced diet.”可知均衡饮食很重要，因为疾病与饮食习惯息息相关，这里“have something to do with”理解为“与……有关”，与选项B可用进行同义替换。故选B。
7．B
【详解】
句意：萨姆对别人总是很有礼貌。 他的父母因他而骄傲。
考查形容词短语。are worried about担心；are proud of因……而骄傲；are patient with对……有耐心；are careful with小心。根据“Sam is always polite to others.”可知萨姆对人总是很有礼貌，父母应感到骄傲。故选B。
8．A
【详解】
句意：18班的吴飞很有趣，他又高又壮。当他走过桌子的时候，他总是把书和笔撞到地板上。
考查介词辨析。pass经过，动词；past经过；onto在……上；off离开。根据“walks …the desk”可知，此处指走过桌子，故第一空填past。第二空是固定搭配knock onto“把某物撞到地上”，故选A。
9．B
【详解】
句意：贝蒂写得比班上其他任何学生都认真。
考查比较级以及词义辨析。careful仔细的，形容词；carefully仔细地，副词。第一空修饰动词write，要用副词，排除C和D选项。根据“in her class”可知，同范围的比较要用“比较级+than+any other+单数名词”的用法，故选B。
10．A
【详解】
句意：——牛顿在苹果树下玩耍时发生了什么？——一个苹果从树上掉下来，落到他的头上。
考查时态和介词。根据“What happened when Newton...under an apple tree”可知，此处指的是“正在树下玩”，结合“fell”和“dropped”可知，此处应用过去进行时，排除C/D选项；结合“An apple fell...the tree”可知，此处指的是“从……掉下来”，英语表达为fall down from...，fall off跌落，其后直接加宾语，不加介词；behind在……后面；off从……离开；故选A。
11．succeed
12．solutions
13．boring
14．useful
15．sleepy
16．none
17．well
18．hardly
19．refused
20．both
【导语】
本文作者主要讲了自己作为一名尖子生的烦恼。
11．
句意：他们说他们想知道是什么帮助我成功。根据“to be a top student”可知作者是尖子生，同学们想知道什么使他成功，succeed“成功”，help sb. do sth.“帮助某人做某事”。故填succeed。
12．
句意：我有很多问题没有解决。根据“However, I am not as happy as I seem to be.”可知问题没有解决。without后用solve的名词形式solution表示“（问题、困难等的）解决办法”，结合“many questions”可知此处用复数。故填solutions。
13．
句意：我经常觉得我的一些课程无聊。根据“I have to face too many exercises that I don’t enjoy at all.”可知觉得一些课程很无聊，“some of my lessons”指物，此处用bored的变形boring表示“令人无聊的”。故填boring。
14．
句意：我被要求做这些事，但我认为它们没有用。but后句意出现转折，被要求做，但觉得这些事没用，用use的形容词useful表示“有用的”，形容词作表语。故填useful。
15．
句意：因此，我经常在白天感到困倦。根据“I must stay up late to finish them.”可知熬夜了，白天会觉得很困，sleepy“困倦的，瞌睡的”，形容词作表语。故填sleepy。
16．
句意：其次，我总是觉得没有一个老师和同学理解我。根据“And I feel lonely.”可知作者觉得老师和同学们没人理解自己，none“没有一个”。故填none。
17．
句意：但是他们中的一些人说我看不起那些在功课上表现得不如我好的学生，尽管我花了很多时间帮助他们。根据“though I spend lots of time helping them”可知需要作者帮助，应是功课不如作者好，as well as“和……一样好”。故填well。
18．
句意：我不知道为什么我很难拥有真正的朋友。根据“And I feel lonely.”可知作者几乎叫不到真正的朋友，hardly“几乎不”。故填hardly。
19．
句意：当我的一个同学拒绝和我一起玩和学习时，我感到很糟糕。根据“I felt terrible”可知让作者感到糟糕的是有个同学拒绝和自己一起玩耍和学习，refuse“拒绝”，再由“felt”可知用一般过去时，refuse的过去式refused。故填refused。
20．
句意：这两个问题都让我心烦。根据“The two problems ”可知两个问题都使作者心烦，both“两者都”。故填both。
21．B
22．C
23．C
24．C
【导语】
本文主要介绍了一些交通规则，包括行人不能在红灯时过马路，以及对于司机执行的新的交通规则，包括公交司机，自行车骑行员，摩托车驾驶员，搭车人员等必须遵守的规则，以及对于肇事逃逸方面的新规。
21．
词义猜测题。根据“cars must stop to let them pass. Pedestrians will have to walk more safely under the new law. They must cross streets at crosswalks”可知行人穿过街道时要走的是人行横道。故选B。
22．
细节理解题。根据“And stay in the bike lane when you’re riding.”可知如果你骑自行车去上学，你走自行车道。故选C。
23．
细节理解题。根据“Do you ride in cars often Don’ t forget to put on your seat belt even if you’ re going for a short taxi ride.”可知，首先应该系上安全带。故选C。
24．
细节理解题。根据“The new law says that doctors must take care of them even if they can’t pay right away.”可知人们可以在医生照顾他们之后付钱。故选C。
25．B
26．A
27．B
28．D
29．D
30．B
自从本世纪初开始，电已成为不可或缺的一部分。在我们的现代生活中，它起着至关重要的作用。因此我们应该认识到的重要性。
25．句意：几乎所有的人类活动都要依靠电力。根据句意可知，这是“依靠……‘用depend on/ upon，故选B
26．句意：我们会毫不犹豫的说我们社会的发展完全依靠电。根据We need electricity to cook our meals. Even a lot of entertainment such as TV, tape recorders and films need electricity.可知，在我们的现代生活中，它起着至关重要的作用，所以是毫不犹豫的说电力很重要，will后加动词原形，故选A
27．句意：几乎所有的机器不能运行。根据As a result, we had to use our hands to produce goods.可知，人们将不得不依靠他们的双手去产，所以是机器停止运行，stop doing表示停止正在做的事情，故选B
28．句意：我们的现代生活节奏会减慢甚至停止。A. speed up加速；B. connect to 连接；C. stitch off关上；D. slow down减慢。根据or even stop可知，是减慢甚至停止，故选D
29．句意：我们应该在没人看和听时关上电器，例如电视和录音机。A. electricity电力； B. wires电线； C. the electronic appliances 与电有关的设备；D. the electric appliances电器。根据such as TV or tape recorder可知，举的例子是电视和录音机属于电器，故选D
30．句意：另外，我们应找到更多的方式去产生更多的电能以便于我们可能有大量的电力。A. Because 因为；B. Furthermore 此外； C. But 但是；D. Though虽然。根据we should find new ways to generate more electricity so that we may have abundant supply of it.可知，这里是节约用电的方法之一，开发新能源，故选BUnit3 Electricity 第1课时（原卷版）
一、单项选择
1．She is a _______ girl and she does her homework _______.
A．careful; careful B．careful; carefully
C．carefully; careful D．carefully; carefully
2．The word “careless” has a suffix. Which of the following word does NOT have a suffix
A．careful B．visitor C．meaning D．certain
3．It’s _______ of you to knock on the door before you enter someone’s room.
A．possible B．impossible C．polite D．impolite
4．Kitty is a _________ girl. She made many mistakes in the Maths test.
A．careful B．carefully C．careless D．carelessly
5．Eat less and exercise more.You will be healthy and fit ________.
A．in a way B．on the way
C．in this way D．by the way
6．Some diseases have something to do with your eating habits. So it’s important for you to have a balanced diet.
A．connect to B．are related to C．are linked D．do harm to
7．Sam is always polite to others. His parents ________ him.
A．are worried about B．are proud of C．are patient with D．are careful with
8．Wu Fei from Class 18 is very interesting, he is tall and strong. When he walks ________ the desk, he always knocks the books and pens ________ the floor.
A．past; onto B．pass; onto C．past; off D．pass; onto
9．Betty writes ________ than ________ student in her class.
A．more carefully; any B．more carefully; any other
C．more careful; any other D．more careful; the other
10．—What happened when Newton ________ under an apple tree
—An apple fell ________ the tree and dropped onto his head.
A．was playing; down from B．was playing; off from
C．is playing; behind D．played; off
二、短文选词填空
从下面方框中选出 10 个单词，并用其适当形式填入短文空格内，使短文意思正确、通顺（每词限用一次）。
all refuse good success bored none both sleep hard interest solve use
My classmates often ask me how I feel to be a top student. They all seem to admire (羡慕) me or even envy (嫉妒) me. They say they want to know what help me ____11____.However, I am not as happy as I seem to be. I have many problems without ____12____. The first is that I often feel stressed. I often feel some of my lessons ____13____. I have to face too many exercises that I don’t enjoy at all. I am asked to do them, but I don’t think they are ____14____. These exercises keep me busy even on the weekends. I must stay up late to finish them. As a result, I often feel ____15____ in the day. Secondly, I always feel that ____16____ of my teachers and classmates understand me. I try to be friendly to them. And I try to be honest and modest. But some of them say I look down on the students who don’t do as ____17____ as me in lesson, though I spend lots of time helping them. I don’t know why I can ____18____ have true friends. I felt terrible when one of my classmates ____19____ to play and work with me. And I feel lonely.
The two problems _____20_____ make me upset. I just don’t know how to solve them.
三、阅读单选
You want to run across the street to catch the bus which is leaving soon But wait! You’d better not. If a policeman sees you, you’ll have to pay a fine (罚款).
New traffic laws (法律) say that if people cross the street when the light is red, they will pay a fine as much as 50 yuan.
Traffic accidents killed more than 104,000 people in China last year. Chinese cities have more cars than ever. Drivers and pedestrians (行人) must work together to make the streets safer.
The law has new rules for drivers and pedestrians. Drivers have to slow down when they are close to crosswalks. If people are in a crosswalk, cars must stop to let them pass.
There are rules for bus drivers, too. If bus drivers smoke, drink or make phone calls while driving, they can be fined. Buses that carry too many people are also against (违反) the law.
Pedestrians will have to walk more safely under the new law. They must cross streets at crosswalks. Also, they shouldn’t climb over the fences (栅栏) along streets.
Do you ride a bike to school It’s not a good idea to carry classmates on the back. You could be fined 50 yuan. And stay in the bike lane (车道) when you’re riding. The big roads are for cars and buses.
Do you like to ride your uncle’s motorbike When you put on your helmet (头盔) ask him to put one on, too. People on motorbikes must wear helmets, the new law says. If they don’t, they’ll have to pay 200 yuan.
Do you ride in cars often Don’ t forget to put on your seat belt (安全带) even if you’ re going for a short taxi ride. It could save your life.
If you see a hit-and-run (肇事逃逸), tell the police. They may give you a reward (奖赏). And don’t be afraid to help people to the hospital if they are hurt in an accident. Don’t worry about money. The new law says that doctors must take care of them even if they can’t pay right away.
21．What does the word “crosswalk” mean in Chinese
A．过马路 B．人行横道 C．立交桥 D．车行道
22．If you ride a bike to school, ________.
A．you can carry classmates on the back B．you can ride on big roads
C．you must stay in the bike lane D．you can’t drink
23．When you ride in a car, the first thing you must do is________.
A．to put on the helmet B．to pay the driver
C．to put on the seat belt D．to see if it carries too many people
24．What can we learn from the passage
A．The law has rules only for drivers.
B．Chinese cities have more cars than other cities in the world.
C．People can pay after the doctors take care of them.
D．If your uncle carries you on his motorbike, only you need to wear a helmet.
四、完型填空
Choose the words or expressions and complete the passage (选择最恰当的单词或词语完成短文）：
Ever since early this century, electricity has become an essential part of our modern life. Almost all the activities of human beings depend___25___electricity. For example, we need electricity to run our machines. We need electricity to light our lamps and to heat our houses.
We need electricity to cook our meals. Even a lot of entertainment such as TV, tape recorders and films need electricity. We will not___26___to say that the development of our society depends entirely on electricity.
If there were no electric power, the world would be a different one. For example, almost all the machines had to stop___27___. As a result, we had to use our hands to produce goods. In the evening, we had to live in darkness and we couldn’t play or work. The development of our modern life had to___28___or even stop.
Therefore, we should make great effort to stop wasting the electricity. We should turn off the lights when no one is in the room. We should switch off___29___such as TV or tape recorder when no one is watching or listening.___30___, we should find new ways to generate more electricity so that we may have abundant supply of it.
25．
A．to B．on C．from D．of
26．
A．hesitate B．stop C．hesitation D．hesitating
27．
A．run B．running C．to run D．runs
28．
A．speed up B．connect to C．stitch off D．slow down
29．
A．electricity B．wires C．the electronic appliances D．the electric appliances
30．
A．Because B．Furthermore C．But D．Though
