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【简答题】
什么是血浆凝血酶原时间(PT)?
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反馈参考答案：
举一反三
【单选题】He has no idea what the book is about. He ______________ it very carefully.
A.
shouldn’t have read
B.
can’t have read
C.
mustn’t have read
D.
wouldn’t have read
【单选题】He has no idea what the book is about, he _____ have read it very carefully.
A.
can’t
B.
mustn’t
C.
may not
D.
must
【单选题】He has no idea what the book is about. He ______________ it very carefully.
A.
shouldn’t have read
B.
can’t have read
C.
mustn’t have read
D.
wouldn’t have
【单选题】He has no idea what the book is about．He have read it very carefully．
A.
needn’t
B.
shouldn’t
C.
can’t
D.
mustn’t
【单选题】He has no idea what the book is about. He ______read the book.
A.
couldn’t
B.
couldn’t have
C.
mightn’t have
D.
shouldn’t have
【单选题】He has no idea what the book is about. He ______read the book.
A.
a. couldn’t
B.
b. couldn’t have
C.
c. mightn’t have
D.
d. shouldn’t have
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