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【单选题】
The lowest ring of a piston is_______.A.
a coil spring
B.
a sealing ring
C.
an oil distributor ring
D.
a main seal ring
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举一反三
【单选题】If you are not happy with what you have got now, what makes you think that you will be happier with ______ ?
A.
anything
B.
some
C.
more
D.
less
【单选题】You have greatly__________us．What you have done is not what you told US about several weeks ago．
A.
disappointed
B.
discouraged
C.
excited
D.
inspired
【简答题】What have you to do before you get to the departure gate? You have to pay ______.
【多选题】我国现阶段民主的主体包括( )
A.
民主建设是社会主义现代化建设的重要内容
B.
民主是社会主义的本质要求
C.
民主建设是社会主义现代化建设的重要目标
D.
民主是社会主义现代化的政治保证
【单选题】You have done well , because you have ____ what you have learnt in class to practice .
A.
contributed
B.
devoted
C.
applied
D.
adapted
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