题目内容
Space travel is nothing new.The first spaceship with a human was sent up _____ space in 1961.Since then,people have not only travelled to space,_____ many of them have also lived there in space stations for some time.
The Soviet Union(苏联)sent the _____ space station into space in 1971.This space station was called Salyut Ⅰ.It _____ as a place where people could live while they observed space and did experiments.The first group of astronauts lived there for 23 days.The Soviet Union went on to make seven more Salyut space stations.At about the same time,the United States had _____ own space station,called Skylab.
Astronauts _____ in these space stations for a short time.However,it wasn't until the late 1980s when the Soviet Union sent the Mir space station that people began to live in space for a _____ time.
Living in space stations seems to be fun,but astronauts face many problems.One of them _____ food.All the _____ on space stations are put together on Earth and sent there by spaceship.Because the food has to last a long time,a lot of it has to be stored in cans.The space station does not have a fridge,but it has a cool room to keep fruit and vegetables fresh.Astronauts also eat many other foods ______ dried meat that do not need special care.
1.A.into B.with C.of
2.A.for B.but C.unless
3.A.ones B.one C.first
4.A.was found B.was built C.was bought
5.A.them B.they C.its
6.A.lived B.played C.took
7.A.more B.shorter C.longer
8.A.am B.is C.are
9.A.apple B.vegetable C.meals
10.A.such as B.at last C.next to