激素类药物的毒副作用得到人们越来越多的关注，通常情况下，医生在其他药物无效的情况下最后使用激素类药物。 关于雌激素药物的叙述中错误的是（）

A.雌激素在化学结构上都属于雌甾烷类

B.天然的雌激素有雌二醇、雌三醇和炔雌醇

C.天然雌激素口服几乎无效

D.炔雌醇在胃肠道中也可抵御生物降解，其口服活性是雌二醇的10～20倍

E.尼尔雌醇，是可口服的长效雌激素

Man: How do most students find a job after they graduateWoman: They usually look for a job by searching the want ads in the newspaper.Question: What does the woman mean

A．Most students would like to work for a newspaper.

B．Most students find a job by reading advertisements.

C．Most students find it hard to get a job by reading advertisements.

D．Most students don't want jobs advertised in the newspapers.