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- 2018-4-14
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A team of researchers reported that five endangered bird species had resumed nesting or investigated nesting boxes erected by volunteers having been ferried out to the island last month.
A. investigated nesting boxes erected by volunteers having been
B. begun investigating nesting boxes erected by volunteers, being
C. investigating nesting boxes, erected by volunteers,
D. were investigating nesting boxes erected by volunteers
E. investigate nesting boxes erected by volunteers, which
OA: D 没理解句意。。
In 1981 children in the US spent an average of slightly less than two and a half hours a week doing household chores; by 1997 they had spent nearly six hours a week.
A. chores; by 1997 they had spent nearly six hours a week
B. chores; by 1997 that figure had grown to nearly six hours a week
C. chores, whereas nearly six hours a week were spent in 1997
D. chores, compared with a figure of nearly six hours a week in 1997
E. chores, that figure growing to nearly six hours a week in 1997
OA: B 为什么E不行呢...是因为独立主格结构n.前不可以带adj.(that)吗...?还是因为独立主格部分表达的内容和主句时态上的问题呢...?如果是时态问题,具体是为什么呢?
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