Some people believe that humans could live on the planet Mars by the year 2100.Our own planet，the Earth，is becoming more and more crowded and polluted because of the rapid increase in population.It is hoped that people could start all over again and build a better world on Mars.Here is what life could be like there.
At present，our spacecrafts are too slow to carry large numbers of passengers to Mars - it would take months.With the development of technology，by the year 2100，the journey might only take about 20 minutes in spacecrafts that travel at the speed of light!However，the spacecrafts would travel so fast that the journey to Mars might be quite uncomfortable.Many people would feel ill.
Humans cannot survive without water，oxygen or food.So far，nobody knows whether there would be enough water or oxygen on Mars for people there.Moreover，scientists are not sure whether plants could grow on Mars.Food would most probably be in the form of pills and would not be so tasty.
Gravity could be another problem.The gravity on Mars is only about three-eighths of that on the Earth.People would have to wear boots that are specially designed to prevent themselves from floating off into space.
Compared with life on the Earth，life on Mars would be better in some ways.People would have more space.They might live in houses with huge comfortable rooms.Also，robots would do most of their work so that they could have more time to relax.
There would probably be no schools on Mars.Every student would have a computer at home connected to an interplanetary network. They would study at online schools with "e-teachers".
Life on Mars would be interesting as well as challenging.
（1）What is the structure of the article ？ AA
A．
B．
C．
D．
（2）What challenges might people have to live on Mars？ CC
①People might have food in the form of pills.
②Mums don't have to do much housework.
③Children could have bigger bedrooms of their own.
④People might get sick traveling in the future spacecraft.
⑤Specially made clothes have to be worn while floating.
⑥Students might be able to have e-classes just at home.
A． ①②③
B． ②③⑥
C． ①④⑤
D．④⑤⑥
（3）What does the underlined word interplanetary network mean？ DD
A．A network connects people from different cities.
B．A network connects people from different countries.
C．A network connects people all over the world.
D．A network connects people from different planets.
（4）What is the writer's opinion towards life on Mars？ CC
A．He is against it.
B．He is worried about it.
C．He looks forward to it.
D．He is not sure about it.
【答案】A；C；D；C
【解答】
【點(diǎn)評(píng)】
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發(fā)布：2024/6/25 8:0:9組卷：22引用：1難度：0.5
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