OG13 65 句子开头的digging是表伴随吗? 求大家帮忙
Digging in sediments in northern China, evidence has
been gathered by scientists suggesting that complex
life-forms emerged much earlier than they had
previously thought.
(A) evidence has been gathered by scientists
suggesting that complex life-forms emerged
much earlier than they had
(B) evidence gathered by scientists suggests a
much earlier emergence of complex life-forms
than had been
(C) scientists have gathered evidence suggesting
that complex life-forms emerged much earlier
than
(D) scientists have gathered evidence that suggests
a much earlier emergence of complex life-forms
than that which was
(E) scientists have gathered evidence which
suggests a much earlier emergence of complex
life-forms than that
正确答案是C没什么问题，可是prep说 主句是完成时态 不能用ving表示伴随啊，因为会出现时间断层。那么这里应该怎么解释呢？ |
