（建议用时：6分钟）
Spacesuits don't just make astronauts look cool. Without these __1__ suits, astronauts wouldn't be able to leave their spaceships. That is to say, they wouldn't be able to __2__ on the Moon or work outside the International Space Station.
Space is a __3__ place for human beings. Firstly, there is no air to breathe. Secondly, space also has high levels of radiation(辐射), the energy that can pass through our bodies and make us __4__. Thirdly, some parts of space are really cold __5__ other parts are very hot. So astronauts could die in just a few seconds if they __6__ outside their spaceship without their suits. With a spacesuit, though, astronauts can move around in space for several hours.
Spacesuits keep astronauts __7__ sealed(密封的) inside. A backpack sends O2 in to let astronauts breathe normally. At the same time, the CO2 __8__ astronauts breathe out is sucked away. The suit also protects them from harmful radiation and fast-moving space dust. __9__ the spacesuit is another suit that looks like a pair of tight pajamas(睡衣) with little pipes running through them. Water runs through these pipes to __10__ astronauts because wearing a spacesuit can make astronauts very hot!
( ) 1. A. private B. special C. plastic D. expensive
( ) 2. A. run B. walk C. live D. surf
( ) 3. A. funny B. natural C. beautiful D. dangerous
( ) 4. A. sick B. bored C. strong D. relaxed
( ) 5. A. after B. since C. before D. while
( ) 6. A. rushed B. jumped C. stepped D. escaped
( ) 7. A. safely B. quickly C. quietly D. terribly
( ) 8. A. who B. this C. that D. whether
( ) 9. A. Above B. Under C. Behind D. Between
( ) 10. A. wash away B. warm up C. cool off D. clean out