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【简答题】
下列钢筋混凝土基础中，抗弯刚度最大的基础形式是( ) A柱下条形基础 B十字交叉基础 C基础 D筏板基础
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【单选题】______ the serious sandstorms that have hit the city recently, the quality of the air in Beijing is very poor. [ ]
A.
Apart from
B.
Due to
C.
Instead of
D.
Thanks to
【单选题】The topic in the sentence “Air pollution in Beijing is due to a number of reasons” is__________.
A.
air pollution in Beijing
B.
due to
C.
a number of reasons
D.
the reason for air pollution
【单选题】Cleaner heating system will in Beijing to control air pollution.
A.
be established
B.
be sent
C.
be covered
【单选题】Cars cause most of Beijing's air pollution. So the 'No Car Day' campaign (活动)asks Beijing drivers _____ their cars at home one day each month. [ ]
A.
leave
B.
leaving
C.
to leave
【单选题】The controlling idea in the sentence “Air pollution in Beijing is due to a number of reasons” is__________.
A.
air pollution in Beijing
B.
due to
C.
a number of reasons
D.
the reason for air pollution
【单选题】Last month, John arrived in Beijing __ . [ ]
A.
by air
B.
by a air
C.
by a plane
D.
take a plane
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