. If you have good eyesight, you will be able to see the church ___________ at the top of the mountain.

A．at distance

B．from distance

C．in the distance

D．from over the distance

下列做法不正确的是（　　）

A．煤气泄漏，立即关闭阀门并轻轻开窗通风

B．燃着的酒精灯不慎碰倒，洒出的酒精燃烧起来，立即用湿抹布盖灭

C．启用闲置的沼气池前，先用燃着的蜡烛进行试验

D．烧菜时油锅着火，立即用锅盖盖灭