While a huge amount of money ___been spent stopping pollution , large quantities of water_    _still heavily polluted．

A．have; is

B．has ;are

C．have; are

D．has ;has

宫颈癌最常见的病理类型是()。

A．鳞腺癌

B．腺癌

C．恶性腺癌

D．黏液腺痛

E．鳞状细胞癌