连词成句，请注意大小写与标点符号。

1. you, did, go, how, there (?)

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2. book, you, did, a, read (?)

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3. what, you, last, did, weekend, do (?)

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4. are, shorter, you, me, than, 4 cm (.)

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划分左、右肝叶的解剖标志是（）

A.肝动脉

B.门静脉

C.肝中静脉

D.肝左静脉

E.肝右静脉