—What is your sister like?
—She______. [ ]
A.can swim
B.enjoys skiing
C.is tall
答案:C
------You are lucky that she is very thoughtful and devoted to you.
------ In fact, I don’t want to ____ her with my problems all the time.
A.hire
B.strike
C.bear
D.bother
用压力法检查制冷系统泄漏,不应充入()
A.压缩空气
B.氮气
C.氢气
D.惰性气体