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问题 单项选择题

由于孕酮水平升高，妊娠期龈炎患者的龈下菌斑中细菌组成发生变化，主要龈下优势菌是（）。

A.Pg

B.Aa

C.Td

D.Bf

E.Pi

答案

参考答案：E

解析：妊娠期龈炎患者的龈下菌斑中细菌的组成也有变化，中间普氏菌（Prevo-tellaintermedia）明显增多而成为龈下优势菌。

填空题

A; Tom! Come in, please.

B: hi! 1_____________________________________?

A: I’m looking for information about London on the Internet. I’m going to London for the London Olympic Games.

B: 2_________________________________________?

A: No, but my father has been there twice. He told me there were many places of interest there.

B: 3________________________________________?

A: I’m leaving before the London Olympic Games’ Opening Ceremony.

B: 4________________________________________?

A: I will go there by plane.

B: Have you ever flown in a plane?

A:5_________________________________________?

B: You must be excited when you fly in a plane.

A: Really? I can’t wait for it.
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单项选择题 B1型题

鱼腥草药材的来源及气味特征是（）

A.为堇菜科植物带叶的茎枝，气微，味淡微涩

B.为三白草科植物的地卜部分，具鱼腥气，味微涩

C.为小檗科植物的地上部分，具鱼腥气，味微苦

D.为蔷薇科植物的地上部分，气微，味淡

E.为禾本科植物的茎叶，气微，味淡
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