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I．句义解释：

1. So many thousands of terrified people died every time there was an outbreak.——…died ____ the disease _____ out.

2. John Snow suspected that the second theory was correct but he needed evidence.——John Snow had an ____ that the second theory was probably correct but he needed to ____ it.

3. He also noticed that some houses (such as 20 and 21 Broad Street and 8 and 9 Cambridge Street) had had no deaths.——He also noticed that ____ in some houses (_____ 20 and 21 Broad Street and 8 and 9 Cambridge Street) had died.

4. If you lose your job, you’ll only have yourself to blame.——…, it’s only your own _____.

5. Many studies link population growth with emissions (排放) and the effect of climate change. ——Many studies show that there is a ____ between population growth and emissions and the effect of climate change.

6. It is wise of you to take care of your health.——It makes ____ to take care of your health.

7. You must exercise great caution when operating this machine. -----You must be very ____ when operating this machine.

8. In his honor this puzzle is called “finding the Euler path”.——To ____ him, this puzzle is called “finding the Euler path”.

9. This club has a strange rule. It rejects women.——This club has a strange rule. It doesn’t ____ women.

10. This happened more than fifty years ago, but Bruhn still had a sense of amazement in his voice as he described what they found.——…as he made a ___ of his _____.

II．阅读：根据提示或上下文在空白处填上适当的词或词组：

Thomas Alva Edision was awarded more patents on invention than any other American. 1___ he died in 1931, Americans wondered how they could 2____ (well) show their respect for him.

One suggestion was that the nation 3____ (observe) a minute or two of total blackout. All electric power would be 4____ in homes, streets and factories.

Perhaps this 5.____ (suggest) plan made Americans realize fully 6____ Edision and his inventions meant to them. Electric power was too important to the country. Shutting it off for even a short time would have 7____ complete confusion. A blackout was out of 8_____ question.

On the day of Edision’s funeral, many people silently dimmed their lights. 9___ this way they honored the man who 10____ (do) more than anyone else to put the great force of electricity at his countrymen’s fingertips.

III．词语替换：

1. After talking to his friends, he drew a conclusion that a book which answered such questions might be popular.

2. Let’s make an analysis of the problem and see what went wrong.

3. In 1995, the Chinese government put forward a plan for “rejuvenating the nation by relying on science and education” and it has helped Chinese scientists make many breakthroughs.

4. They need someone to help clean their homes, cook and look after the elderly and children.

5. Water can take in and give off a lot of heat without big changes in temperature, thus creating a stable environment.

6. A tornado (飓风) happened in a small city in New York State, destroying houses and businesses.

7. He was determined to find out why.

8. The word boss grew in popularity over the years, gradually taking the place of master as the latter became associated with slavery.

9. We explained our plans, and he was full of enthusiasm about them.

10. To make the puzzle clearer he took away the bridges to see the pattern more clearly.

IV：完形填空：

Barbara McClintock was born in 1902 in Hartford, Connecticut. Barbara was the third of four children. Her family 36 to the Brooklyn area of New York City in 1908. Barbara was an active child with 37 in sports and music. She also 38 an interest in science.

She studied science at Cornell University in Ithaca, New York. Barbara was 39 a small number of undergraduate students to 40 training in genetics in 1920. Years later, she 41 that few college students wanted to study genetics.

In the early 1920s, genetics had not received widespread acceptance as a 42. Only twenty years had passed 43 scientists rediscovered the theories of heredity (遗传). Austrian researcher Gregor Mendel had 44 these ideas in the middle of the nineteenth century after completing a series of experiments 45 plants. His work helped scientists better understand how genes 46. They showed how genetic 47 are passed to living things from their ancestors.

Barbara McClintock decided to study botany, the 48 study of plants, at Cornell University. She completed her undergraduate studies in 1923. McClintock decided to 49 her education at Cornell. She completed a master's degree in 1925. Two years later, she finished all her 50 for a doctorate degree.

In the late 1920s, McClintock 51 several other students in a group that studied genetics. The students 52 a future winner of the Nobel Prize, George Beadle. Another was Marcus Rhoades. Years later, he 53 become a leading expert in genetics.

McClintock said both men 54 the importance of exploring the 55 between genes and chromosomes, which are lines of genes.

McClintock stayed at Cornell after she completed her education and made several discoveries about genes and chromosomes.

36. A. traveled  B. went  C. got             D. moved

37. A. talents   B. gifts   C. interests      D. likes

38. A. developed B. built  C. created        D. picked

39. A. of      B. among     C. in               D. from

40. A. receive  B. accept  C. start            D. finish

41. A. decided  B. thought  C. noted     D. stated

42. A. topic  B. science     C. course         D. subject

43. A. since  B. before      C. after           D. when

44. A. come across           B. put forward

C. found out               D. set out