2020成都七中三诊模拟英语试题附参考答案(4)

For the time being, these are only theories. The technology and evidence we have today cannot be used to test these theories and identify the most plausible explanation. Continuing studies may provide us with clearer answers. Or future studies may reveal that the answer is even murkier (含糊不清的) than it now appears.

32. What can we learn about viruses from the text?

A. Viruses have nothing to do with the common cold.

B. Viruses are really small living organisms.

C. Viruses can’t reproduce unless they find a host cell.

D. Viruses enter our bodies mainly through the mouth, nose and hair.

33. Which of the following might explain the origin of viruses? A. They evolved from the fossils of large organisms.

B. They evolved from parasites into independent organisms.

C. They evolved from the T-cells in animals.

D. They evolved along with their host cells.

34. The underlined word “plausible” in the last paragraph probably means _______.

A. reasonable        B. common        C. creative        D. unbelievable

35. What can we conclude from the text?

A. Viruses live longer in human host cells than in animals’.

B. Viruses will become more like bacteria as they evolve.

C. It may take a long time to understand the origin of viruses.

D. The author is optimistic about future virus research.

 第二节（共 5 小题；每小题 2 分，满分 10 分）      根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。  

Leonardo da Vinci and Nature

In the modern world, art and science are two very separate activities, but in Leonardo’s time they were closely connected. Science meant mathematics and medical studies.    36    Mathematics included practical work like surveying land for making maps as well as measuring the movements of the stars in the sky. An artist might need to measure the different parts of the body. He could also use mathematics to place things in relationship to each other in a drawing or painting so the scene looked correct.    37        Mathematics was also connected to music because musical sounds have a fixed relationship with each other that can be described in numbers.    38    More than this, though, Leonardo believed that numbers were a part of all things in the world, including music, and he said that “without them nothing can be done.”

    “Nature has kindly given us things everywhere to copy,” wrote Leonardo. In all his activities, Leonardo was trying to discover the rules that control nature. In his search for those rules, he looked very carefully at a lot of examples and details. Actual experience was more important to him than opinion, and he worked from facts to ideas.    39    His purpose was to examine the world so he could copy it in beautiful paintings and sculptures. He also wanted to learn from the clever solutions of nature.

       40    His quick little sketches, often done while wandering outside, helped him to catch a movement or a shape. More careful drawings would be done at a desk with a pen and ruler. In July 2001, a small drawing by Leonardo was sold for $12 million. It was the most expensive drawing in the world.   

 

A. Leonardo was always drawing.

B. How could these be connected with art?

C. Leonardo’s ideas were vastly ahead of his time.

D. Mathematicians and doctors worked to discover the unknown.

E. Above all, Leonardo wanted to understand how and why things worked.

F. You will see a good example of such positioning in the painting of The Last Supper.

G. Leonardo himself was a very good musician and liked to play an instrument and sing.

 

第三部分 英语知识运用（共三节，满分45分）第一节  完形填空（共20小题；每小题1.5分；满分30分）  阅读下面短文，从 A、B、C、D 四个选项中，选出可以填入空白处的最佳选项，并在答题卡上相应番号处将该项涂黑。 

Throughout my life, I was never very athletic. I wasn’t really into   41  , sports or conflict. The only   42   I enjoyed were   43   things like watching TV and playing computer games. It was during my junior year in high school that I realized I needed a   44  . My friends were joining the long distance running club and   45   me to do it also. At my school, there were no qualification   46