Unit 3 单元测试题文档格式.docx

1、23. Some scientists point out that if you clone an embryo, you can produce valuable human tissues could be used to save human lives.A. that B. / C. what D. for which 24. The first mammal successful from an adult was Dolly the sheep. A. being cloned B. having been cloned C. to be cloned D. cloning 25

2、. The research is so designed that once_ nothing can be done to change it.A. begins B. having begun C. beginning D. begun26. My suggestion is that we_ to cut back on production and reduce the amount of things we make and buy.A. try B. tried C. ought try D. must try27. He is good at all his subjects

3、and _ going to a top university.A. in his way B. on his way to C. by his way to D. by way of28. The rapid development plus huge population growth has meant that not only is the amount of water taken from the river rising, but the waste being put back into the river_. A. have increased B. had increas

4、ed C. has been increasing D. was increased29. Tom came to the teachers office and made an apology _ his class teacher _ his being late for school.A. to, for B. to, to C. for, to D. for, for30. _around the lab, the foreigners were taken to visit the library. A. Having shown B. Having been shown C. Be

5、ing shown D. They had been shown31. If someone had warned him，he _ that food. Luckily he was sent to the hospital immediately. A. would not take B. would not have takenC. had not taken D. had not taken32. While there has been research in GM animals such as pigs, no GM meat at present.A. sold B. is b

6、eing sold C. will sell D. is selling33. Having a trip abroad is certainly good for the old couple, but it remains _ whether they will enjoy it.Ato see Bto be seen Cseeing DSeen34. _ the earths population, we should have fewer babies, not cloning more. A. Reducing B. Being reduced C. Reduced D. To re

7、duce35. Im here to say is that a healthy environment and development should be possible at the same time.A. That B. Which C. What D. /SECTION B（18marks） For each blank in the following passage there are 4 words or phrases marked A, B, C and D. Fill in each blank with a word or phrase that best fits

8、the context.The friendship between us never fades. Mary Allen was my best friendlike a sister I never had. We did everything together: piano lessons, movies, swimming, horseback riding, and so on.When I was 13, my family moved. Mary and I 36 in touch through letters, and we saw each other on special

9、 37 like my wedding and Marys. Soon we were 38 with children and moving to new homes, and we wrote less. One day a card that I sent came back, 39 “Address Unknown.” I had no idea how to 40 Mary.Over the years, I thought of Mary often. I wanted to 41 stories of my children and then grandchildren. I n

10、eed to share my 42 when my brother and then my mother died. There was an empty place in my heart that only a friend like Mary could 43 .One day I was reading a newspaper 44 I noticed a picture of a young woman who looked a lot like Mary and whose last name was Wagman Marys married name. “There must

11、be thousands of Wagmans,” I thought, 45 I wrote to her anyway.She called as soon as she got my letter. “Mrs. Tobin!” she said excitedly, “Mary Allen Wagman is my mother”. Minutes later I heard a voice that I 46 at once, even after 40 years. We laughed and cried and asked about each others 47 .Now th

12、e empty place in my heart is filled, and there is one thing that Mary and I know for sure: We wont lose each other again!36. A got B. kept C. lost D. fell37. A. places B. occasions C. festivals D. things38. A. comfortable B. careful C. read D. busy39. A. saying B. writing C. read D. told40. A. know

13、B. stop C. find D. help41. A. share B. speak C. write D. remember42. A. news B. sorrow C. stories D. failure43. A. stay B. hide C. fill D. live44. A. when B. while C. if D. live45. A. and B. since C. but D. so46. A. realized B. received C. contacted D. recognized47. A. future B. progress C. lives D.

14、 weddingsSECTION C（12marks） Complete the following passage by using ONE word that best fits the context.Researchers have cloned a wide range of biological materials, including genes, cells, tissues and even organisms. 48 the last 50 years, scientists have conducted cloning experiments in a wide rang

15、e of animals using a variety of techniques. In 1979, researchers produced the first genetically identical mice 49 splitting（分开）mouse embryos in the test tube and then implanting the resulting embryos into the wombs of adult female mice. 50 after that, researchers produced the first genetically ident

16、ical cows, sheep 51 chickens by transferring the nucleus（细胞核）of a cell taken from an early embryo into an egg that had been emptied of its nucleus.It was not until 1996, however, that researchers succeeded 52 cloning the first mammal from a mature cell taken from 53 adult animal. After 276 attempts,

17、 Scottish researchers finally produced Dolly. Two years later, researchers in Japan cloned eight calves from a single cow, 54 only four survived. 55 cattle and sheep, other mammals that have been cloned from somatic（physical ）cells include: cat, deer, dog, horse, mule, ox, rabbit and rat.READING COM

18、PREHENSION （30marks） Read the following three passages. Each passage is followed by several questions or unfinished statements. For each of them there are 4 choices marked A, B, C and D. Choose the one that fits best according to the information given in the passage. AOne day, an ant（蚂蚁） was drinkin

19、g at a small river and fell in. She tried her best to reach the bank（河岸） but failed. The poor ant was tired but she didnt give up and then a bird saw her.Out of pity, the bird threw her a piece of grass, which supported her like a boat, so the ant reached the bank again. While she was resting and dr

20、ying herself in the grass, she heard a man come near. He was walking quietly with a gun in his hand. As soon as he saw the bird, he wished to kill it. But when he raised his gun to fire, the ant bit（咬） him in the foot. The man stopped to see what had hit him. And then the bird flew away. It was an a

21、nimal much weaker and smaller than the bird that had saved its life.（ ） 56. The ant could not reach the bank although_.A. she cried for help B. she could fly C. she tried her best D. she could smell well（ ） 57. The bird saved the ant because_.A. she was the ants friend B. she had pity on the poor an

22、t C. the ant was kind D. the ant was clever（ ） 58. The ant succeeded in getting on the bank with the help of _.A. a leaf B. a piece of wood C. a piece of grass D. a gun（ ） 59. When the man raised his gun, _.A. he felt something biting him in the foot B. the ant told the bird to leave at onceC. the b

23、ird hid himself in the grass D. the bird immediately flew away（ ） 60. We can learn from the passage that _ .A. we shouldnt be lazy B. we shouldnt have pity on others C. we should study hard D. we should help people when they are in trouble BSome scientists say that animals in the oceans are increasi

24、ngly threatened by noise pollution caused by human beings. The noise that affects sea creatures comes from a number of human activities. It is caused mainly by industrial underwater explosions, ocean drilling, and ship engines. Such noises are added to natural sounds. These sounds include the breaki

25、ng of ice fields, underwater earthquakes, and sounds made by animals themselves. Decibels （分贝） measured in water are different from those measured on land. A noise of one hundred and twenty decibels on land causes pain to human ears. In water, a decibel level of one hundred and ninety-five would hav

26、e the same effect. Some scientists have proposed setting a noise limit of one hundred and twenty decibels in oceans. They have observed that noises at that level can frighten and confuse whales. A team of American and Canadian scientists discovered that louder noises can seriously injure some animal

27、s. The research team found that powerful underwater explosions were causing whales in the area to lose their hearing. This seriously affected the whales ability to exchange information and find their way. Some of the whales even died. The explosions had caused their ears to bleed and become infected

28、. Many researchers whose work depends on ocean sounds object to a limit of one hundred and twenty decibels. They say such a limit would mean an end to important industrial and scientific research. Scientists do not know how much and what kinds of noises are harmful to ocean animals. However, many sc

29、ientists suspect that noise is a greater danger than they believed. They want to prevent noises from harming creatures in the ocean. 61. According to the passage, which of the following is increasingly dangerous to sea creatures? A. The man-made noises. B. The noises made by themselves. C. The sound of earthquakes. D. The sound of the ice-breaking. 62. Which of the following is discussed in the third paragraph?A. Different places with different types of noises. B. The very human ears sensitive to all types of noises. C. The same noise measured differently on land and