单选题
It is said that stress and tiredness often _______ a lack of concentration.
A、
result in
B、
respond to
C、
rank as
D、
reflect on
【正确答案】
A
【答案解析】
短语辨析。result in 导致……结果; respond to 对……做出反应；rank as 归于……之类；reflect on 反思。
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