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【单选题】
A new bridge over the river now ,You can see many railway workers and engineers working every day.
A.
is built
B.
is being built
C.
has been built
D.
should be built
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A.
①②
B.
②④
C.
①③
D.
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A.
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B.
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C.
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D.
直进法
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A.
the/the
B.
a/X
C.
X/X
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A.
①②
B.
②③
C.
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D.
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