题目内容

【题目】The “teacher﹣free exam” means that students take their exams ______ teachers.Students must be more honest.
A.without
B.against
C.through
D.with

【答案】A
【解析】句意:学生们在没有老师的情况下参加考试.学生必须更加诚实。根据句中的关键词teacher﹣free exam中的free一词,我们可以基本判断出考试时应该是学生自己,没有老师监考,所以我们应选择一个否定意义的方式介词,结合选项against为反对;through为穿过;只有without意为没有,表否定,with表示肯定。根据句意,故选A。

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【题目】 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.

1A.crowdedB.modernC.developedD.serious

2A.At timesB.At lastC.By the wayD.At present

3A.destroyB.produceC.growD.support

4A.hopeB.chanceC.problemD.mistake

5A.refuseB.preventC.realizeD.repair

6A.changeableB.responsibleC.possibleD.impossible

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