问题补充：
任务型阅读阅读短文，按照要求完成各题。（5分）
At the moment, it may be difficult to imagine, but many people believe that, by the year 2100, we will live on the planet Mars. Our own planet, Earth, is becoming more and more crowded and polluted. Luckily, we can start again and build a better world on Mars.
First of all, transport should be much better. At present, our spaceships are too slow to carry large numbers of people to Mars—it takes months. However, by 2100, spaceship 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 produce the food and air that we need. However, can these plants produce water for us? There is no answer now.
There is a problem for us to live on Mars. Mars suck（吸力） us much less than the Earth does. This will be dangerous because we could easily jump too high and fly slowly away into space. To prevent this, humans on Mars have to wear special shoes to make themselves heavier.
Life on Mars will be better than that on Earth in many ways. People will have more space. Living in a large building with only 10 bedrooms is highly possible. Many people believe that robots will do most of our work, so we have more time for our hobbies.
There will probably be no school on Mars. Every student will have a computer at home which is connected to the internet. They can study, do their homework and take exams in online schools. Each student will also have their own online teacher called “e-teacher”.
However, in some ways, life on Mars may not be better than that on the earth today. Food will not be the same—meals will probably be in the form of pills and will not be as delicious as they are today. Also, space travel will make many people feel ill. The spaceship will travel fast, so the journey to Mars will probably be very uncomfortable.
【小题1】根据短文内容完成句子填空（每空限填一个单词）。
In the first paragraph, we can know and people will live on the planet of Mars.
【小题2】根据短文内容完成句子填空（每空限填一个单词）。
In order to live on Mars, people need faster , that can produce food or air for people, and special shoes.
【小题3】根据短文内容回答问题。
Write down an example that is given in the passage about the disadvantages living on Mars.
【小题4】把短文中画线的句子译成汉语。
【小题5】根据短文内容用一个完整的英文句子（限10个词以内）回答问题。
What’s the passage mainly about?
when, why
答案：
(答案→)when, why
解析：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。
【小题1】根据第一段的内容可知，到2100年，人们将会去火星居住。这是因为地球变得越来越拥挤，污染也越来越严重。所以在这一段中，作者告诉了我们人们什么时候，为什么去火星居住。故填when, why。
【小题2】根据短文第二段中的第一句话可知，现在我们的宇宙飞船太慢了，不能携带很多人去火星，所以我们需要速度更快的宇宙飞船。另外，这一段话中还提到Scientists should be able to develop plants that can be grown on Mars，即我们还需要能在火星种植的植物。
【小题3】这个题目要求我们给出一个在火星居住的缺点的例子，在文章的最后一段提到的是在火星居住的问题。如火星上的食物跟地球上是不一样的，也许不像地球上的食物那么好吃；宇宙飞船速度太快，可能会让人得病等。我们可以任意举一个例子来回答。
【小题4】at present 是一个固定的短语，意思是现在，目前；这个句子使用的结构是too…to…，意思是太…以致不能…，表达否定的意思；it takes months这个句子中take的意思是花费。
【小题5】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。作者还讲述了在火星上居住的优点和缺点。故用一句话来概括本文的大意，我们可以说the advantages and the disadvantages about living on Mars，即住在火星上的优点和缺点。
任务型阅读阅读短文 按照要求完成各题。（5分）At the moment it may be difficult to imagine but many people beli
