以下对银汞合金的性质为不利因素的是（）
A.γ相
B.γ1相
C.γ2相
D.γ1相和γ2相
E.γ相和γ1相
参考答案：C
用所给词的适当形式填空。
1. We are trying our _____(well) to make the city more beautiful.
2. Are you interested in _____(pay) a visit to Paris?
3. The children_____ (watch) TV when their mother came in.
4. Disease can often make you _____(worry).
5. Why won't you_____ (plant) some flowers around your house?
下列各句中加点的词与例句中加点词用法相同的一项是（ ）
例句：且庸人尚羞之
A．单于壮其节
B．空以身膏野草
C．均之二策，宁许以负秦曲
D．不平心持正，反欲斗两主
