《2025年课课练初中英语活页卷九年级下册译林版》

三、完形填空（共10分，每小题1分）
People are always interested in other planets. We are always ____36____, “Is there life on Mars?” We all know that it is difficult for people on the Earth to live on Mars because we need water and oxygen to ____37____, but there is little oxygen on Mars.
Living on Mars seems like living on a very high mountain. There is the thin ____38____. It might be 20℃ above zero at noon and 60℃ below zero ____39____.
A lot of people think there may be plants on Mars. We know that there is carbon (碳) on Mars. This is a kind of material ____40____ in all plants and animals on the Earth. Through a telescope, Mars looks red. In some places, it seems grey. At times the grey colour turns grey - green, then brown, and then grey again. The grey - green colour may be a colour of ____41____ life changing colour ____42____ the seasons. At first scientists thought the red planet was as ____43____ as the Moon with dust storms blowing over the large sandy deserts. But Mars does not seem as ____44____ as we once believed it to be. According to an analysis on the recent Mars pictures, some scientists believe there is lots of ____45____ on Mars and water is in the form of ice. If there is water, there will be hope of finding life on Mars.
( ) 36. A. talking B. wondering C. knowing D. telling
( ) 37. A. drink B. eat C. survive D. breathe
( ) 38. A. air B. atmosphere C. oxygen D. gas
( ) 39. A. at night B. in the daytime C. in the morning D. in the afternoon
( ) 40. A. to find B. finding C. find D. found
( ) 41. A. animal B. plant C. earth D. people
( ) 42. A. for B. by C. along D. with
( ) 43. A. lifeless B. hopeless C. harsh D. lonely
( ) 44. A. cold B. hot C. dry D. wet
( ) 45. A. water B. ice C. plants D. life

答案：

What is the brightest planet in the sky? It is Venus. Do you want to know more about it? Take the Venus Express!
Venus Express is a space probe (空间探测器) sent towards Venus by European scientists on 9 November 2005. It studied the atmosphere of Venus and sent photos back to the Earth. But before that, Venus Express must travel about 400 million kilometres. It reached Venus in April of the next year.
Venus and the Earth have similar weight and size. However, Venus is closer to the Sun than the Earth. Venus is very hot. The temperature reaches 460℃ during a Venus day. A Venus day is about 243 days on the Earth. Its atmosphere is mostly carbon dioxide, which turns into acid rain (酸雨) easily.
“The Earth could easily have turned out like that,” said the European scientist David Southwood. “It is important for us to find why, and Venus Express should do that.” Venus Express also helped scientists learn what might happen to the Earth in the future. The Venus Express mission officially ended in December 2014.
( ) 46. Venus is the ____________ planet in the sky.
A. biggest B. brightest C. farthest D. smallest
( ) 47. Venus Express was designed by ____________ scientists.
A. Chinese B. American C. Japanese D. European
( ) 48. The Earth and Venus have similar ____________.
A. atmosphere B. weight C. time D. temperature
( ) 49. The temperature reaches ____________ during a Venus day.
A. 350℃ B. 243℃ C. 460℃ D. 486℃
( ) 50. Which of the following is NOT true?
A. Venus Express studied the atmosphere of Venus and returned photos.
B. The Earth is closer to the Sun than Venus.
C. Venus Express helped scientists learn what might happen to the Earth.
D. A Venus day is about 243 days on the Earth.

答案：

Astronauts have already visited the Moon and lived on space stations. They have never been to another planet, but they might visit Mars soon. Astronauts will spend about seven months getting to the planet, then about two years on the planet and about seven months travelling back to the Earth. They will be away from the Earth for about three years, so they will need much food.
It is very expensive to take food into space. It costs about 4,000 dollars to carry something that weighs one kilo to the low Earth orbit and more to Mars. Of course, astronauts will need to take much food with them to feed themselves for three years. Taking food into space costs too much money, so they need to find food that is not very heavy.
Astronauts on space stations eat dried food. It is very light, so it does not cost much money to carry it into space. But astronauts will stay healthier and happier if they eat fresh food. In the future, astronauts on Mars may grow vegetables like carrots and lettuce (生菜).
Astronauts on Mars will probably have special machines. They will use these machines to change beans (豆) into food that tastes like meat or cheese. They probably will not eat real meat or cheese because it will not be possible to keep animals in space.
( ) 51. Which planet do astronauts plan to go to next?
A. The Earth. B. The Moon. C. Mars. D. Venus.
( ) 52. How long will it take to get to Mars?
A. About seven months. B. One year.
C. Two years. D. Three years.
( ) 53. Why do astronauts eat dried food?
A. Because it is very healthy.
B. Because it makes them happy.
C. Because it is cheap to carry.
D. Because it is cheap to buy.
( ) 54. What may astronauts do in the future?
A. Take enough fresh food for their journey.
B. Grow some fresh vegetables on Mars.
C. Eat only dried food.
D. Grow food in their spacecraft.
( ) 55. What will they get from beans?
A. Lettuce and carrots.
B. Apples.
C. Food that tastes like meat or cheese.
D. Real meat and cheese.

答案：

The journey to the Moon has been the first step towards future space exploration (探险). The distance between the Moon and the Earth is very short indeed compared with the distance between the Earth and other planets. Mars, our neighbouring planet, is millions of miles away! Travelling to other planets will be man’s next aim. Such travels will be more challenging than the trip to the Moon and certainly more adventurous (惊险的).
In 1976, two American spaceships, Viking 1 and Viking 2, landed on Mars trying to discover whether there is any life on that planet. So far the signs of life on Mars have neither been confirmed (确认) nor been ruled out. The surface of Venus is so hot that it is almost certain that there is no life. Also, the atmosphere of Venus is extremely dense (稠密的) and the pressure is nearly a hundred times greater than that of the Earth’s atmosphere.
Scientists believe man may find planets, which have the same conditions as those we have on the Earth, but man should realize the Earth will be his only home for a long time and always love and care for it.
( ) 56. According to the passage, travelling to other planets will be ____________.
A. much easier and more interesting B. far more exciting and dangerous
C. man’s final aim D. man’s first step
( ) 57. Which of the following is NOT true?
A. The journey to the Moon has been the first step towards space exploration.
B. The Moon is much nearer to the Earth than Mars.
C. Mars is thousands of miles away from the Earth.
D. Travelling to other planets will be man’s next aim.
( ) 58. From the passage, we can guess ____________.
A. there is life on Mars
B. there is no life on Mars
C. the atmosphere of Mars is not so dense as that of Venus
D. scientists will have little hope of finding the answers
( ) 59. Man can live under the conditions of ____________.
A. the hot surface
B. the same pressure as that on the Earth
C. the atmosphere thinner than that on the Earth
D. little water or air
( ) 60. Scientists think we should take care of our Earth because ____________.
A. no other planets are going to take the place of the Earth
B. everything needed is provided by the Earth
C. the only home of man will be the Earth for a long time
D. the dream of finding another home for man will come true

答案：