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【简答题】
数控机床滚动导轨预紧的方法有（）、（）和（）。
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【单选题】The writer believes that, in western society, dreams are considered to be ______.
A.
shameful
B.
beneficial
C.
unimportant
D.
artistic
【单选题】The writer believes that pets are valuable to children because they ______.
A.
return affection
B.
are comforting
C.
need looking after
D.
are protective
【单选题】The writer believes that reading by the computer is advisable chiefly because it ______ .
A.
saves a lot of time to find information needed
B.
reads more efficiently than a human mind
C.
covers a much wider range of reference
D.
guarantees reading efficiency and validity
【单选题】Regarding the dangers of pollution, the writer believes that ______.
A.
there is a need for rational discussion.
B.
indoor pollution is a recent phenomenon.
C.
people should worry most about their work environment.
D.
industrial pollution causes specific diseases.
【简答题】The writer believes that polar bears are not a species in their own right.
【单选题】The writer believes that Americans do not learn foreign languages largely because they are lazy.
A.
Y
B.
N
C.
NG
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