单项选择题

Monoclonal refers to a colony (clone) derived from（）cell。

A.one
B.two
C.half
D.three

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单项选择题

The books in this library are（）those in that one

A.Three times more than
B.More three times than
C.Three times many as
D.As three times more as

【简答题】Please talk about your interests in three sentences.

答案： I like reading books，because Ican learn a lot of things that...