highscore Test1-39很难

highscore Test1-39. 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.

A. they originally seemed

B. they seemed originally

C. it seemed that they would originally

D. it originally seemed

E. it originally seemed they would

E is the best answer.

请问：1、it指代什么？

It here refers to "they would"

2、they would后面省略了什么？

"deteriorate"

3、seem后面是否省略了that？

I think so but I don't know why.

4、it originally seemed做什么成分？

a structure as "it is said that...", my view.

5、than后的比较内容是什么，怎么与前面平行的？

比较”the so-called “quick disintegration” plastics”要花比原来他们好像要花的时间更长的时间分解。

欢迎指教！！谢谢。