单选题
It is said that the sudden change in weather ______ many people"s health.
A、
has affected
B、
has committed
C、
has effected
D、
has caused
【正确答案】
A
【答案解析】
词义辨析。affect 影响(主语可是somebody or something); commit 委托，犯罪； effect结果，效果；cause 原因，理由，根据。故正确答案为A。
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