LESSON 7 Can We Go and Live on Mars?
Part 2 Useful Expressions
1

This drawing shows a scientist’s vision of the first city on Mars.
2

It looks cool.
3

We will have a lot of difficulties living there, which include dealing with the atmosphere.
4

It is mostly carbon dioxide.
5

Astronauts will need to find a way to get oxygen.
6

We have to deal with the gravity, which is only about 38% as strong as the gravity on Earth.
7

We must work hard to tackle such challenges.
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