题目内容：

Life in space is different _____ life on earth. How do astronauts live, work and play there? It is very interesting.

Space food _____ more like the food we eat on earth. In the past astronauts could _____ only small pieces of dried food. Now the space station_____ water and iceboxes. They can eat much everyday food such as fruit, vegetables and ice­cream. They have _____ own rooms in space. Sleeping is really too _____. There is no gravity(引力), so they have to tie themselves _____ the beds in their own rooms, _____ they will fly away!

_____ is important in space. Astronauts don't have to work much. They don't stand up, sit down or walk. They only exercise on bikes and ______ machines for two hours every day.______ do they go to the WC there? They use a special “air WC”. It uses air to take ______ away. What do astronauts do when they aren't working? They ______ read books, play cards, listen to music or send e­mails to their friends and ______. Sometimes they just sit and look out of the window. Doesn't that ______ much funnier?

1.A.to B.from C.with D.in

2.A.was B.are C.were D.is

3.A.eat B.drink C.buy D.sell

4.A.finds B.has C.does D.makes

5.A.their B.they C.them D.theirs

6.A.exciting B.boring C.easy D.difficult

7.A.in B.to C.at D.for

8.A.so B.or C.and D.but

9.A.Swimming B.Playing C.Exercising D.Chatting

10.A.other B.others C.another D.the other

11.A.Where B.When C.What D.How

12.A.something B.anything C.everything D.nothing

13.A.should B.must C.can D.need

14.A.classmates B.family C.workers D.teachers

15.A.make B.look C.sound D.feel