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请教KAPLAN中的一道语法题
Researchers are studying plastics that dissolve at different rates, and they are finding that the so-called "quick disintegration" plastics are taking more time to deteriorate than they originally seemed.
(1)they originally seemed
(2)they seemed originally
(3)it seemed that they would originally
(4)it originally seemed
(5)it originally seemed they would
请问答案(5)中的it和they分别指代什么?如果they指代plastics,为什么(1)不对?谢谢! |
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