医师在执业活动中应当履行法定义务。不属于法定义务的是（）

A.遵守技术操作规范

B.参与所在机构的民主管理

C.遵守职业道德

D.尊重患者，保护患者的隐私

E.宣传卫生保健知识

-A number of college students_______ to work in China's rural  (农村的)  areas.

-Yes, we call them "college-graduate village officials". Their number is getting_______.

They brought new ideas to the less-developed villages.

A．have been encouraged; bigger and bigger

B．has been encouraged; bigger and bigger

C．have encouraged; more and more

D．has encouraging; more and more