下图所示的化学实验基本操作中，不正确的是

A．取用固体粉末

B．点燃酒精灯

C．检查气密性

D．蒸发食盐水

The two things _______they felt very proud were Jim’s gold watch and Della’s hair.

A．about which

B．of which

C．in which

D．for which