题目内容

In "what do you think he does", "what" is the ___________ of the sentence.

A. subject
B. adverbial
C. object
D. complement

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"It seems that she was there at the report." The sentence means that ___________

A. She seems to have been there at the report.
B. She seemed to have been there at the report.
C. She seems to be there at the report.
D. She seemed to be there at the report.

滤过屏障(或滤过膜)

尿是经()和()等作用而形成的。

肾的血液循环有两种作用:1();2()。

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