2020全国大学生英语竞赛C类完形填空

【竞赛样题】2020年全国大英赛C类样题——完形填空Part III Cloze (10 marks)

Read the following passage and fill in each blank with one word. Choose the correct word in one of the following three ways: according to the context, by using the correct form of the given word, or by using the given letter(s) of the word. Remember to write the answers on the answer sheet.

When we see a bright light moving quickly across the night sky, we often talk about seeing a “shooting star”or a “falling star”. These moving lights are not in (46) stars at all. They are small pieces of matter from outer space that burn up as they enter the Earth’s atmosphere. The correct name for these (47) ob is meteoroids. Any pieces that make it to the Earth’s surface without (48) (complete) burning up are known as meteorites. Meteor is actually the name given to the light we see when a meteoroid is burning up.

If a large enough meteorite hit the Earth, it could knock the planet out of its orbit, which would have catastrophic results. The path we follow around the sun would change and the Earth would become (49) much hotter or much colder

as a result. This change in (50) tem would affect sea levels and the amount of water in rivers.

There would either be huge floods or the oceans would dry up causing a (51) (dry). All life on the Earth would probably become extinct. Although it is unlikely that the Earth will be struck by a meteorite large enough to do this kind of damage, there is (52) evi of quite a large meteorite hitting the Earth in the past. In 1908, a large area of forest in Tunguska, Siberia, was destroyed by a meteorite that came apart just before it hit the ground. The moon, however, has about three billion craters, caused by meteorites crashing (53) its surface. It has so many craters because it does not have enough atmosphere in which the meteoroids can burn up.

Some of the meteorites that have reached the Earth’s surface have done considerable damage. Some scientists believe that it was a change of climate, caused by meteorites hitting the Earth, that resulted in the (54) (extinct) of the dinosaurs and other large prehistoric animals. Scientists are especially interested in meteorites because they contain information about the solar system. It is (55) wi believed

that most meteorites were produced billions of years ago by collisions between asteroids (small planets). This means that the physical and chemical structure of a meteorite can give scientists information about the early universe.

Keys:

46. fact/reality

47. objects

48. completely

49. either

50. temperature

51. drought

52. evidence

53. into

54. extinction

55. widely