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【单选题】
This nationwide smog should serve as a reminder to all, indicating a high time that we ______ on what we've done to the environment.A.
have reflected
B.
are reflecting
C.
will reflect
D.
reflected
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【单选题】Medical research has shown that the widespread use of cigarettes contributes the increase of cancers.
A.
towards
B.
for
C.
with
D.
to
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