疥疮易侵入什么部位()。
A.头皮
B.颈部
C.背部
D.皮肤薄嫩处
E.四肢伸侧
参考答案:D
选择适当的单词或短语填空。
1. Let's go to the ____________ (library; cinema) to see a film.
2. I'm ____________ (hungry; thirsty). Let's eat some noodles.
3. I want to go to the ____________ (restaurant; park) to fly kites.
4. I'll show you. ____________ (These; This) way, please.
有人预言:H2是21世纪最理想的能源,其根据不正确的是( )
A.生产H2的原料来源广阔
B.在等质量的可燃气体中,H2燃烧时放出的热量多
C.H2易液化,携带方便
D.燃烧时无污染