In the last ten years, the dropout rate among Black high school students fell substantially over the past decade, while the number of Blacks who attend college is more than twice what it was.
A) fell substantially over the past decade, while the number of Blacks who attend college is more than twice what it was.
B) fell substantially, while the number of Blacks attending college is more than double what it was at that time
C) has fallen substantially, while the number of Blacks attending college has more than doubled
D) has fallen substantially over the past decade, while the number of Blacks attending college is more than twic what it was at that time
E) has fallen substantially over the past decade, while the number of Blacks who are attending college are more than double what they were
XDF给的答案是E 可是我觉得E明显不对
E) has fallen substantially over the past decade, while the number of Blacks who are attending college are more than double what they were
单复数不一致了嘛
我选的答案是C
因为我觉得 主句里面已经有了 in the past ten years, 再用over the past decade显然就重复了
而且in +大段时间概念 是使用完成时的标志~~~~这样看来~~~就只有C最好了~~~~
困惑ing~~~~
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