—How do you find your new classmates?

—Most of them are kind, but ________ is so good to me as Bruce.

A．none

B．no one

C．everyone

D．someone

电网调度机构监督、指导直调水电厂进行（），并根据流域水情变化进行滚动修正。

A.洪水预报

B.防汛演练

C.洪水调洪演算