2019-2020学年高二上学期训练卷
必修五 Unit1 Great Scientists
英 语 （一）
（本卷满分100分）
一、单词拼写（每小题1.5分，共15分）
1.The police ________ (推断出) that he must be the murderer.
2.One of the biggest ________ (挑战) this government is faced with is how to remove hunger.
3.As we all know, Van Gogh was a famous ________ (画家).
4.To our surprise, many rivers and lakes nearby are seriously ________ (污染).
5.It's not a ________ (科学的) way to test the theory.
6.The scientist ________ (分析) the milk and found it contained too much water.
7.After a long discussion, they drew a ________ (结论) in the end.
8.The old woman is well ________ (照顾) to by her daughter.
9.He is an ________ (专家) in the field of maths.
10.My ________ (内科医生) advised me to give up smoking.
二、单句改错（每小题1.5分，共15分）
11.It makes the sense to work on the problem before it gets out of control.
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12.With the homework finish, the children went home happily.
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13.Only if did you put the word in the sentence did the use of the other words make sense.
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14.If you make your child responsible to these bills, he will learn to budget for necessary expenditures.
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15.Plenty of fresh air contribute to good health.
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16.Only by working hard you be able to get the position in that company.
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17.The man is always strict in his son even if his son is not a child.
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18.Not everyone in our company is positive to this new suggestion.
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19.He has locked the door that lead to the garden.
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20.Cholera is a dead disease and many people died of it in the past.
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三、完成句子（每小题3分，共15分）
21.It ______________ his wife ______________________.
似乎他的妻子应该对那件事负责任。
22.I find it difficult to ______________ on this.
我觉得此事难下结论。
23.Jane, don't ________ your skin ________ the sun.
简，不要把皮肤暴露在阳光下。
24.What she said sounded convincing, but I ____________.
她的话听起来让人信服，但我对此表示怀疑。
25.It may not be a great suggestion. But before a better one ______________, we'll make do with it.
这可能不是一个好建议。但是在提出更好的建议前，我们勉强用这个吧。
四、阅读理解（每小题2.5分，共10分）
Louis Pasteur was a world-famous French chemist and biologist.
He is particularly famous for his work on rabies vaccine (狂犬病疫苗). The rabies virus enters the body through the bite of an infected animal or through infected saliva entering an existing wound. After experimenting with the saliva of animals suffering from the disease, Pasteur concluded that the disease rests in the central nervous system of the body. By studying the tissues of infected animals—rabbits, Pasteur was able to produce a form of the virus. This could be used for inoculation (接种).
On July 6, 1885, Pasteur tested his pioneering rabies vaccine on a man for the first time. He saved the life of a young man called Joseph Meister who had been bitten by a rabid dog. Pasteur was urged to treat him with his new method. The treatment lasted 10 days and at the end he recovered and remained healthy. Since then thousands have been saved by this treatment.
On March 1886, Pasteur was invited to present his results to the Academy of Sciences and in 1888 went on to found the Pasteur Institute in Paris. This was a pioneering clinic for the study of infectious diseases, the treatment of rabies and a centre for teaching. Pasteur directed the institute personally until he died. The Pasteur Institute is still one of the most important centres in the world.
Pasteur became a national hero and was honored in many ways. He died at Saint-Cloud on September 28, 1895 and was given a state funeral at the Cathedral of Notre Dame.
Modifications of the Pasteur method are still used in rabies treatment today. A newer vaccine which contains virus prepared from human cells grown in the laboratory is safer and requires a shorter course of injections.
26.A person can develop rabies ________.
A.if he is bitten by a rabbit
B.if he touches infected saliva
C.if infected saliva enters his wounds
D.if he touches an infected animal
27.Rabies probably can destroy a person's ________.
A.nervous system B.blood
C.skin D.saliva
28.What can we learn about Pasteur's test of his vaccine on the man?
A.The man was sent to a clinic ten days later.
B.It didn't save the man's life.
C.It proved to be a great success.
D.The man was his second patient.
29.What can we infer from the last paragraph?
A.Pasteur's rabies vaccine is out of date.
B.A new rabies vaccine has already been tested on patients.
C.Injections of vaccine still take much time.
D.Much improvement has been made on rabies vaccine.
五、七选五（每小题3分，共15分）
A memorable science project
If someone tells you to remember a phone number or address, it feels like an easy task at first. You repeat the numbers to yourself, either aloud or in your mind. But after just a few seconds you might find yourself starting to doubt your own memory. __30__ Thus, it will try to throw away information that seems old or irrelevant. There are ways of helping our minds retain (记住) information, however, and in this activity you will explore ways that we lose and keep memories.
Short-term, or working memory, is a way of describing most people's abilities to store a small amount of information for a brief period of time in a readily accessible form. __31__ People don't have to stop and think to remember something in short term memory.
__32__ Such techniques include visualizing (观察) the information in a surprising way or linking pieces of information together so that one reminds you of the other. In the case of visualizing information, this could be as simple as remembering you parked your car on the fifth floor in the D section by picturing five dogs sitting in your car! __33__ If you need to purchase cereal (谷物), milk, fruit, cheese and eggs, you could imagine the cereal in a bowl, with milk pouring over it and pieces of fruit on top. Then imagine cracking an egg over everything, and it's full of melted cheese! These may seem simple or even silly. __34__ In this activity you'll test the recall of a few friends or family members, and learn a few tricks for improving memory!
A.There are many techniques for improving memory.
B.Our brain is always seeking new and useful information.
C.Short-term memory has a short duration but is quickly and easily accessed.
D.In addition, linking information could help you remember your grocery list.
E.Retaining that information over longer periods of time becomes difficult yet.
F.Your short-term memory has a limited amount of space to store information.
G.However, they are proved to be good ways for improving memory by scientist.
六、书面表达（共30分）
假定你是李华，为了丰富学生的文化生活，你校学生会开展了主题为“秋天的校园”的摄影作品比赛。请结合以下要点，将比赛的情况写成一篇新闻稿，发表到你校英文网站上。
1.过程：同学踊跃参加；
2.方式：微信平台展示；
3.结果：公众好评如潮。
注意：
1.词数100左右；
2.可以适当增加细节，以使行文连贯。
参考词汇：微信WeChat 校园campus
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2019-2020学年高二上学期训练卷
必修五 Unit1 Great Scientists
英 语（一）答 案
一、单词拼写（每小题1.5分，共15分）
【答案】
1. conclude
2. challenges
3. painter
4. polluted
5. scientific
6. analysed
7. conclusion
8. attend
9. expert
10. physician
二、单句改错（每小题1.5分，共15分）
【答案】
11.去掉第一个the
12.finish→finished
13.去掉第一个did
14.第一个to→for
15.contribute→contributes
16.hard后加will或can
17.in→with
18.to→about
19.lead→leads
20.dead→deadly
三、完成句子（每小题3分，共15分）
【答案】
21. seemed/seems that; was/is to blame for that matter
22. draw a conclusion
23. expose; to
24. suspected it
25. is put forward
四、阅读理解（每小题2.5分，共10分）
【答案】26-29 CACD
【解析】
26.细节理解题。根据第二段第二句可知，人类感染狂犬病的途径有两种，一种是被已传染的动物咬伤；另一种是通过传染性唾液进入伤口。C项对应的是第二种途径。
27.细节理解题。根据第二段第三句可知，动物感染狂犬病后，病毒便附着在其身体的中枢神经上，由此可推知，人类感染的话情况也是一样的。故A项正确。
28.推理判断题。根据第三段内容可知，路易斯·巴斯德第一次在人身上试验他研制的疫苗就获得了成功。故C项正确。
29.推理判断题。根据文章最后一段可知，改进过的巴斯德方法到今天仍然在使用，新的疫苗比旧的更加先进，因此推断D项正确。
五、七选五（每小题3分，共15分）
【答案】30-34 BCADG
【解析】本文介绍一个值得记忆的科学项目。
30.根据下文：因此，它将试图丢弃那些看起来过时或无关紧要的信息。可知，我们的大脑总是在寻找新的、有用的信息。故选B。
31.根据下文：人们不需要停下来，想在短期记忆中记住一些东西。可知，短期记忆的持续时间很短，但很快就能被访问。故选C。
32.根据下文：这些技术包括以一种令人惊讶的方式可视化信息或将信息链接在一起，目的是让你想起了另一个。可知，有许多提高记忆的技术。故选A。
33.根据下句：如果你需要购买谷物、牛奶、水果、奶酪和鸡蛋，你可以想象一个碗里的谷物，牛奶倒在上面，上面有水果。可知，此外，链接信息可以帮助你记住你的购物清单。故选D。
34.根据上句：这些看起来很简单，甚至有些愚蠢。所以下句应该是一句与上句转折的内容，“然而，事实证明，它们是科学家提高记忆力的好方法。”故选G。此处However表示转折；G项中的they指上文的These方法。
六、书面表达（共30分）
【答案】
In order to enrich the students' school life, the Student Union held a creative photography work competition, whose theme is “Autumn Campus”.
Hearing the news, students showed their great enthusiasm for the competition. They not only participated in it actively, but also improved some photographic skills by communicating with each other. All the works were displayed through the WeChat platform, many of which won the public focus. More than 30 outstanding works got the first prize and were awarded by our school.
This competition undoubtedly achieved great success and it has been well received by the public, with favourable comments flooding in.
2019-2020学年高二上学期训练卷
必修五 Unit1 Great Scientists
英 语 （二）
（本卷满分100分）
一、阅读理解（每小题2分，共16分）
A
Albert Einstein was born in Germany in 1879. He was a quiet child who spent much of his time alone. He was slow to talk and had difficulty learning to read. When Albert was five years old, his father gave him a compass. The child was filled with wonder when he discovered that the compass needle always pointed in the same direction—to the north. He asked his father and his uncle what caused the needle to move.
Albert did not like school. The German schools of that time were not pleasant. Students could not ask questions. Albert said he felt as if he were in prison.
In 1905, Albert Einstein published some important papers in a German scientific magazine. They included one of the most important scientific documents in history. It explained what came to be called his “Special Theory of Relativity(相对论)”. Ten years later he expanded it to a “General Theory of Relativity”.
In 1921, he won the Nobel Prize in Physics. It was given to him not for his theories of relativity, but for his discovery of the law of the photoelectric effect(光电效应).
Albert Einstein left Germany in 1933. He moved to the United States to continue his research. Einstein became a citizen of the United States in 1940.
Einstein was a famous man, but you would not have known that by looking at him. His white hair was long and wild. He wore old clothes. He showed an inner joy when he was playing his violin or talking about his work. Students and friends said he had a way of explaining difficult ideas using images that were easy to understand.
Einstein spent the last twenty-five years of his life working on what he called a “unified field theory”. He hoped to find a common mathematical statement that could tie together all the different parts of physics. However, he did not succeed.
Albert Einstein died in 1955 at the age of seventy-six.
1.What do we know about Albert Einstein in his childhood?
A.He was very clever.
B.He liked talking with people.
C.He was curious about new things.
D.He was good at inventing new things.
2.What’s the right order of the following events about Albert Einstein?
a.He became a citizen of the United States.
b.He won the Nobel Prize in Physics.
c.He put forward his “General Theory of Relativity”.
d.He left Germany for the United States.
A.d，b，c，a B.d，a，c，b
C.b，c，d，a D.c，b，d，a
3.What can be inferred about Albert Einstein from the passage?
A.Albert Einstein didn’t like asking questions at school.
B.Albert Einstein hated school for its strict rules.
C.Albert Einstein cared little about how he looked.
D.Albert Einstein’s lessons were too difficult to understand.
4.What’s the passage mainly about?
A.The life story of Albert Einstein.
B.The scientific discoveries of Albert Einstein.
C.Albert Einstein and his theories of relativity.
D.How Albert Einstein won great success in his life.
B
Do you suppose Darwin, one of the greatest scientists of all time, really did foolish experiments? Or did he do experiments that were so simple and basic that other people just thought they were foolish?
Sometimes, people think they have already known the answer to a question or the solution to a problem. Sometimes, they really do know an answer or a solution, but without thinking they are important.
Charles Darwin didn't settle for (满足于) just thinking he knew something. And he believed all things could be important however simple they seemed to be.
Suppose you drop sheets of paper that are of exactly the same size and shape. If you drop them at the same time in the same place, they will fall in the same way. Now make one of the sheets of paper into a tight little ball and let it drop along with the other sheets. What happens? You have done an experiment that is so simple that you might think it couldn't be worth anything.
But this simple experiment is important. It explains part of our present-day understandings of physics that were worked out long ago by Galileo and Newton. And these understandings set aside some of ancient Greek physics.
Scientists sometimes stop to look at very simple things and to think very hard about them. Even the simplest idea, which we might think is foolish, can shake the foundations of science.
5.The passage tells us that Charles Darwin ________.
A.was a great English scientist
B.always liked doing the experiments that others thought difficult
C.thought even the simplest thing was important
D.didn't get on well with others
6.The underlined phrase “set aside” most probably means ________.
A.throw away B.store up
C.put to use D.realize
7.The author of the passage tries to ________.
A.convince us that Charles Darwin, Galileo and Newton are the greatest scientists in the world
B.draw the conclusion that basic sciences are simple things
C.prove that two sheets of paper, with the same size and shape, will fall at the same speed
D.draw our attention to everyday happenings around us
8.Which of the following is TRUE?
A.Darwin really did foolish experiments.
B.According to some people, Darwin did foolish experiments.
C.It is believed by all the people that things could be important though they seemed to be simple.
D.Galileo and Newton worked out ancient Greek physics.
二、七选五（每小题2分，共10分）
If anyone had told me three years ago that I would be spending most of my weekends camping, I would have laughed heartily. Campers, in my eyes, were people who enjoyed insect bites, ill-cooked meals, and uncomfortable sleeping bags. They had nothing in common with me. __9__
The friends who introduced me to camping thought that it meant to be a pioneer. __10__ We slept in a tent, cooked over an open fire, and walked a long distance to take the shower and use the bathroom. This brief visit with Mother Nature cost me two days off from work, recovering from a bad case of sunburn and the doctor's bill for my son's food poisoning.
I was, nevertheless, talked into going on another fun-filled holiday in the wilderness. __11__ Instead, we had a pop-up camper with comfortable beds and an air conditioner. My nature-loving friends had remembered to bring all the necessities of life.
__12__ We have done a lot of it since. Recently, we bought a twenty-eight-foot travel trailer complete with a bathroom and a built-in TV set. There is a separate bedroom, a modern kitchen with a refrigerator. The trailer even has matching carpet and curtains.
__13__ It must be true that sooner or later, everyone finds his or her way back to nature. I recommend that you find your way in style.
A.This time there was no tent.
B.Things are going to be improved.
C.The trip they took me on was a rough one.
D.I was to learn a lot about camping since then, however.
E.I must say that I have certainly come to enjoy camping.
F.After the trip, my family became quite interested in camping.
G.There was no shade as the trees were no more than 3 feet tall.
三、完形填空（每小题1.5分，共30分）
In 1896, 17-year-old Einstein went to Zurich to study physics. There he met Marits, a girl from Hungary. They studied in the same class and the same interest in physics brought the two together and they became good __14__. Before long, they __15__ in love with each other. In 1903, when Einstein was 24, he __16__ Marits, who was four years older than he. __17__ their marriage, Einstein __18__ himself to the research of the great theory of relativity (相对论). __19__ her husband more help, Marits gave __20__ her own work, and became a good wife and __21__. She tried her best to encourage him __22__ possible. She was sure that her husband __23__ succeed. They often discussed the theory while __24__ outside or sitting together in the room. They __25__ did that in their letters when one of them was __26__ from home.
In 1914, the Einsteins moved to Berlin and __27__ down there. At that time, Einstein's theory __28__ to be correct and he became __29__ all over the world.
Marits was very __30__ her husband with his success. But it was not long __31__ the First World War __32__. Marits as well as her two sons, who were __33__ holiday in Switzerland, couldn't come back to Berlin any longer. The war not only stopped Einstein's work but also broke up the warm, happy family. In 1919, Einstein and Marits had to get divorced (离婚).
14.A.pairs B.couples C.friends D.classmates
15.A.got B.fell C.became D.turned
16.A.marrying B.marries C.married D.married with
17.A.Since B.For C.With D.After
18.A.gave B.offered C.forced D.devoted
19.A.Giving B.To give C.Given D.To have given
20.A.off B.out C.up D.in
21.A.cook B.mother C.friend D.assistant
22.A.whatever B.whenever C.however D.wherever
23.A.must B.might C.should D.would
24.A.walked B.walking C.went D.coming
25.A.even B.never C.seldom D.sometimes
26.A.beyond B.off C.out D.away
27.A.put B.settled C.lived D.sat
28.A.seemed B.appeared C.proved D.looked
29.A.happy B.pleased C.satisfied D.famous
30.A.proud of B.praised for C.pleased with D.worried about
31.A.when B.before C.since D.as
32.A.appeared B.took place C.occurred D.broke out
33.A.in B.at C.on D.for
四、单句语法填空（每小题2分，共24分）
34.The computer center, ________ (open) last year, is very popular among the students in this school.
35.The scientists are working ________ seeking new methods of killing the cancer cells.
36.The discovery of the new evidence led to the thief ________ (catch).
37.My teacher made a great contribution to ________ (teach) us to be good and helpful to others.
38.The students were sitting in the classroom with their eyes ________(fix) on the teachers.
39.They turned a deaf ear to our demands, ________ made us angry.
40.I find ________ really hard to work with such an impatient person.
41.You will ________ (take) in if you believe what the strangers said without thinking.
42.Are you interested in the ________ (move) of the other planets?
43.Only when the war was over in 1945________ he return to his hometown.
44.Every ________ I was in trouble, he would come to help me.
45.The doctor who ________ (cure) him of his illness was very experienced.
五、单句改错（每小题2分，共20分）
46.The falling leaves of the wood cover the ground in fall.
47.The girl dressing in red is from a big city.
48.Hearing the encouraged news, we all felt proud of our country.
49.Most of the scientists inviting to the party were Americans.
50.From the stomach the disease quickly attacked the body and soon the affecting person died.
51.I have been to some English-spoken countries.
52.The children examining at the hospital yesterday were seriously ill.
53.She had little sense of direction, so she often got losing when she was out.
54.Don’t you know the girl worn a red skirt?
55.Don’t use words, expressions,or phrases knowing only to people with specific knowledge.
2019-2020学年高二上学期训练卷
必修五 Unit1 Great Scientists
英 语（二）答 案
一、阅读理解（每小题2分，共16分）
A
【答案】1-4 CDCA
【解析】
1.推理判断题。根据第一段关于爱因斯坦对罗盘产生好奇的故事可以推断出，他对新事物充满好奇心，因此C项正确。
2.细节排序题。根据文章第三、四、五段可以得知，a、b、c、d四项发生的时间分别为1940年、1921年、1915年及1933年，因此D项正确。
3.推理判断题。根据倒数第三段可以判断，爱因斯坦是一个在生活中不拘小节、不在乎自己外表的人。
4.主旨大意题。本文简要介绍了爱因斯坦的生平，因此A项最为恰当。
B
【答案】5-8 CADB
【解析】
5.细节理解题。短文并没有说查尔斯·达尔文是哪个国家的科学家，可排除A；文中说法是别人认为达尔文的许多实验太简单不值得做，可排除B；文中没有论述达尔文与别人相处的情况，可排除D。由第三段最后一句可知答案为C。
6.词义猜测题。由上文可知作者认为做这个简单的实验是重要的，它解释了目前人们对于物理方面的部分理解。因此这些理解当然是“推翻”了一些古希腊物理学的观点。由此可推知set aside与throw away同义。
7.推理判断题。短文的最后一段点明作者的观点：最简单的想法都可能动摇科学的根基，即告诉读者要留意身边的每一件事，哪怕它非常简单。
8.细节理解题。短文第一段最后一句表明，有些人认为达尔文做了愚蠢的实验。
二、七选五（每小题2分，共10分）
【答案】9-13 DCAFE
【解析】
9.空格前一句说“他们与我没有共同之处”，空格后一段讲述了作者的一次野营，前后之间存在转折关系，所以此处需要填一个承上启下的转折句，这与D项中的however相呼应。
10.根据后文的描述“我们睡帐篷，在篝火上做饭，走很长的路去洗澡和上厕所”可知，这次野营比较艰难，这与C项中的rough相对应。
11.根据后文转折副词instead后的描述“我们这次有野营车，里面有舒服的床和空调”可知，这次的野营没有帐篷。故选A。
12.根据空格后的代词we可判断所填句子中应含有复数名词，再结合空格后面一句“从那以后我们进行了很多次野营”可判断应选F项“这次野营后，我的家人都对野营相当感兴趣了”。
13.根据整篇文章的行文思路来看，此处应填一个总结升华的句子，结合空格后面一句“每个人迟早都会找到回归自然的方式”可判断选E项“我必须得说，我肯定喜欢上野营了”。
三、完形填空（每小题1.5分，共30分）
【答案】14-18 CBCDD 19-23 BCDBD 24-28 BADBC 29-33 DABDC
【解析】
14.由空前句意“……对于物理方面同样的兴趣使得他们两个人走到一起”以及下文“不久，他们相爱了”可知，这里是指他们成为了好朋友。
15.fall in love with sb.的意思是“爱上某人”，其他三个动词不与in love with连用。
16.表示“和某人结婚”，应用marry sb.，marry后不加介词with，排除D项；由空前的时间状语从句可知，此处应是主句的谓语动词，排除A项。又因本文是描述过去发生的事情，排除B项。故选C。
17.after their marriage“他们结婚以后”。
18.devote oneself to sth.的意思是“投身、致力于某事”。give, offer和force不与oneself to sth.搭配。
19.由下文可知，玛丽兹所做的一切都是为了给丈夫更多的帮助。此处为动词不定式作目的状语且只需要用动词不定式的一般式。
20.为了给丈夫提供更多的帮助，玛丽兹放弃了自己的工作。give up “放弃”，符合句意。give off “发出(光和热等)”；give out “发出；分发”；give in “屈服”。
21.由上文中的“____ her husband more help”及下文可知，此处指玛丽兹成为了爱因斯坦的贤妻和助手(assistant)。
22.句意：不管什么时候只要有可能，玛丽兹都尽力去鼓励他。whenever “无论何时”，符合语境。
23.玛丽兹相信自己的丈夫将来“会(would)”成功，而不是“必须(must)”“可能(might)”或“应该(should)”成功。
24.当从句主语与主句主语一致，且从句谓语部分含有be动词时，从句中的主语和be动词可一并省略。本句省略they were，因此选择walking。
25.由上文可知他们总是一起讨论问题，此处用even表示程度进一步加深，即“他们甚至在信中也讨论问题”。
26.由上文中的“in their letters”可知，此处是说他们其中的一个不在家的时候。be away from home “不在家”符合语境。
27.根据空前的“moved to Berlin”可知应选B。settle down “定居”。而put down意为“放下”，sit down意为“坐下”，均与句意不符，排除A、D两项；live一般不与down连用。
28.由空格后的“to be correct”和“he became ____ all over the world”可推知，爱因斯坦的理论最终证明是正确的。prove “证实，证明”，符合语境。
29.此处指爱因斯坦在当时享誉全世界。famous “著名的”，符合语境。
30.be proud of “为……而骄傲或自豪”；be praised for “为……受到称赞”；be pleased with “对……感到满意”；be worried about “对……担忧”。由上下文来看，玛丽兹是为丈夫的成功感到自豪。
31.惯用句式“It is not long before... ”意为“不久就……”。
32.appear “出现”；take place “发生”，用来指有计划地发生；occur “出现”；break out “发生；爆发”，多用来指战争、火灾等。此处指第一次世界大战的爆发，因此选择D项。
33.be on holiday “在度假”。他们母子三人在瑞士度假。
四、单句语法填空（每小题2分，共24分）
34.【答案】opened
【解析】open和the computer center之间构成被动关系，故用过去分词作定语。
35.【答案】on
【解析】句意：科学家们正致力于寻找新的杀死癌细胞的方法。work on “致力于”，为固定搭配。
36.【答案】being caught
【解析】lead to “导致”，该词组中to为介词，后面要跟名词或动词-ing形式。小偷是被抓，应该用动词-ing形式的被动式。
37.【答案】teaching
【解析】make a contribution to “为……做贡献”，其中to为介词，后接名词或动名词。
38.【答案】fixed
【解析】此处是with复合结构。their eyes和fix之间为被动关系，故应用过去分词形式作宾补。
39.【答案】which
【解析】which引导非限制性定语从句，且指代前面整个主句的内容，在从句中作主语。
40.【答案】it
【解析】此处it作find的形式宾语，真正的宾语是后面的不定式。
41.【答案】be taken
【解析】句意：如果你不加思考就相信陌生人所说的话，你就会被骗。主语you和动词短语take in之间是被动关系，所以用被动语态。take in “欺骗”。
42.【答案】movements
【解析】由介词in和定冠词the可知此处应填名词形式，由planets可知应用名词复数形式。
43.【答案】did
【解析】“only＋状语从句”位于句首时，主句采用部分倒装语序，根据从句中的时间状语可知，主句应用一般过去时，故填助动词did。
44.【答案】time
【解析】句意：每当我处于困境时，他就会来帮助我。every time用作连词，引导时间状语从句，意为“每当”。
45.【答案】cured
【解析】句意：治好他的病的那位医生非常有经验。由was可知应用一般过去时。
五、单句改错（每小题2分，共20分）
【答案】
46.falling→fallen
47.dressing→dressed
48.encouraged→encouraging
49.inviting→invited
50.affecting→affected
51.English-spoken→English-speaking
52.examining→examined
53.losing→lost
54.worn→wearing
55.knowing→known
