单选题
Among 169 cases, the smokers______85. 79% , and the ratio between males and females is 3. 7 to 1.
A、
answer for
B、
account for
C、
take up
D、
sum up
【正确答案】
B
【答案解析】
解析：A项answer for“因……而受罚”；B项account for“(比例)占；对……负有责任”；C项take up“拿起”；D项sum up“总结”。
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