The journey to Mars takes months because the spacecraft flies too slowly.

A. first of all B. in the future C. at present D. in the past

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Life in space is much different from life on earth. How do astronauts live in space?

Eating

In the past, astronauts could eat only small pieces of dried food. But now astronauts are able to eat more everyday food like fruit, vegetables and ice cream.

Sleeping

All the people in the ISS(國(guó)際空間站) have their own rooms. They have to tie (系) themselves to their beds, or they’ll fly away! That seems like a strange way to sleep, but astronauts say sleeping in space is really not too bad.

Exercising

This is more important in space than on earth. Astronauts exercise on bikes and other machines(機(jī)器) for about two hours every day. That way, they can still be healthy when they get back home.

Having fun

Astronauts can read books, play cards, listen to music or send e-mails to their friends and families when they aren’t working. Sometimes they just sit and look out of the window. It’s also much fun!

Astronauts are hardworking whether in space or on the earth. Though the work sometimes is difficult, they are still interested in it and love the job. Many people think their lives are very interesting and their dream jobs are to be the astronauts.

1.We probably read the passage from______.

A. a report card B. a letter C. an e-mail D. a science magazine

2.How often do the astronauts exercise?

A. two hours B. two hours a day

C. one hour every day D. every day

3.It can be inferred(推斷) from the passage that _______.

A. Astronauts could eat only small pieces of dried food every day.

B. Astronauts couldn’t sleep well because they had to tie themselves to their beds.

C. Astronauts exercise on bikes and other machine in space so they are healthy.

D. Astronauts couldn’t get messages from their friends and families.

4.What's the best title of the passage?

A. People in Space B. Have Fun in Space C. Astronauts D. Astronauts’ life

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Do you know Mars? We are always__________, “Is there life on Mars?” We all know that it is difficult for people on the Earth to live on Mars because we need water and oxygen to

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Living on Mars seems like living on a very high mountain. There is very thin__________. It might be 20 degrees above zero at noon and 60 degrees below zero__________.

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__________________________________________________________________?

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