Question

    It may be difficult to imagine by the year 2100, we will live on Mars. Our own planet, the Earth is becoming more and more _______ and polluted. Luckily, we can start again and build a better world on Mars.

First of all, transport should be much better. _______, our spaceships are too slow to carry large numbers of people to Mars - it takes months. However, by 2100, Spaceships can travel at half the speed of light. It might take us two or three days to get to Mars.

Secondly, humans need food, water and air to live. Scientists should be able to develop plants that can be grown on Mars. These plants will _______ the food and the air that we need.

There is still another _______ for us to live on Mars. Mars makes us much lighter than the Earth does. This will be dangerous because we could easily jump too high and fly slowly away into space. To _______ this, humans on Mars have to wear special shoes to make themselves lighter.

Life on mars may be better than that on the Earth in many ways. People will have more space. Living in a large building with 10 bedrooms is highly _______. Many people believe that robots will do most of our work.

However, life on Mars may not be better than that on the Earth today. Meals will probably be in the form of pills and space travel will make many people feel ill.

1.A.crowded B.modern C.developed D.serious

2.A.At times B.At last C.By the way D.At present

3.A.destroy B.produce C.grow D.support

4.A.hope B.chance C.problem D.mistake

5.A.refuse B.prevent C.realize D.repair

6.A.changeable B.responsible C.possible D.impossible

Answer

1.A

2.D

3.B

4.C

5.B

6.C

【解析】

文章大意：这篇短文主要给我们讲述的是在未来，人们也许会去火星上居住，因为地球上的人口越来越多，而污染也越来越严重。去火星居住有很多优点，如人们的居住空间会更大，人们都用机器人工作等。当然，在火星居住也有它的缺点。如火星上的引力很小，食物不会像地球上那么好吃等。

1.句意：我们自己的星球，地球正变得越来越拥挤和污染。

考查形容词的辨析。Crowded拥挤的；modern现代的；developed发展的；serious严肃的。根据空后and polluted可知，此空应填形容词，结合句意可知，此空是“拥挤的”意思，应填crowded，故选A。

2.句意：目前，我们的宇宙飞船速度太慢，无法将大量人员运送到火星——这需要几个月的时间。

考查介词短语的辨析。At times有时；At last最后；By the way顺便说；At present目前。根据However, by 2100, Spaceships can travel at half the speed of light. It might take us two or three days to get to Mars可知，此空是“目前”的意思，应填At present，故选D。

3.句意：这些植物将生产我们需要的食物和空气。

考查动词辨析。destroy摧毁；produce生产；grow生长；support支持。根据空前助动词will可知，此空应填动词原形，结合句意可知，此空是“生产”的意思，应填produce，故选B。

4.句意：我们在火星上生活还有另一个问题。

考查名词的辨析。hope希望；chance机会；problem 问题；mistake错误。根据空前another 可知，此空应填名词，结合This will be dangerous because we could easily jump too high and fly slowly away into space可知，此空是“问题”的意思，应填problem，故选C。

5.句意：为了防止这种情况，火星上的人类必须穿上特制的鞋子，使自己更轻。

考查动词的辨析。refuse拒绝；prevent防止，阻止；realize意识；repair 修理。根据空前动词不定式符号To可知，此空应填动词原形，结合This will be dangerous because we could easily jump too high and fly slowly away into space可知，此空是“防止”的意思，应填prevent，故选B。

6.句意：住在有10间卧室的大房子里是很有可能的，许多人相信机器人将完成我们大部分的工作。

考查形容词辨析。changeable可变的；responsible负责的；possible可能的；impossible不可能的。根据空前is highly 可知，此空应填形容词作表语，结合句意可知，表示“人类住在10间卧室那么大的房子是可能的”，此空是“可能的”意思，应填possible，故选C。