用括号内所给动词的适当形式填空。

1. The wild flowers look like a soft orange blanket _____(cover) the desert.

2. She was _____(terrify) to watch the rain _____(pour) down the windows.

3. We are _____(determine) to fight for the realization of communism.

4. The black sky looks as if it _____(fall).

5. He _____(panic) and ran as fast as he could to safety.

下列各组物质的分离或提纯，应选用下述方法的哪一种？（填选项字母）

A．分液

B．过滤

C．萃取

D．蒸馏　　E．蒸发结晶　　F．高温分解①分离CCl₄和H₂O：　　   　    　　；

②除去澄清石灰水中悬浮的CaCO₃：　　   　    　　；

③除去CaO固体中少量的CaCO₃固体：　　   　    　　；

④从碘水中提取碘：　　   　    　　； 

⑤分离CCl₄（沸点为76.75℃）和甲苯（沸点为110.6℃）的液体混合物：　　   　    　　。