三、完形填空.AWe live in the computer age. People use computers _21_much of their work. But few people know how _22_ after them. Remember the following when you use your computer._23_ your computer in a cool and dry room. Too much or too little heat is bad for computers. Damp(潮湿) is also bad for _24_.Do not let people _25_ near your computer. Smoke of all kinds is very bad for many parts of a computer.Do not eat _26_ drink when you are near your computer. Piec