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问题 单项选择题

下列哪一项不是卵巢妊娠的诊断标准（）

A.双侧输卵管正常

B.囊胚种植于卵巢

C.卵巢及囊胚以卵巢固有韧带与子宫相连

D.囊胚壁上有卵巢组织

E.子宫没有相应增大变软

答案

参考答案：E

选择题

For some time the expert __________ people of the health risks caused by passive smoking. He     says he won't stop until all the smokers around him decide to quit smoking.

A．is warned

B．is warning

C．has been warning

D．has been warned
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单项选择题 A1型题

汉代的衡量单位为铢，几铢等于一两（）

A.24

B.25

C.12

D.16

E.20
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