语法与词汇
18.
Statistics as well as a course in research methodology______all doctor candidates.
A、
is required of
B、
are required of
C、
is requiring with
D、
are required by
【正确答案】
A
【答案解析】
本题中as well as…结构是附属结构作状语，其前的statistics(统计学)是以-s结尾的学科名，故使用单数的谓语动词；sth．is required of sb．表示某物为某人所必需。
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