It looks _______ it were going to rain.
A.even if
B.as if
C.even though
D.like
答案:B
肾动态显像在肾功能损伤诊断中有何价值?
在遇到火灾,必须穿过浓烟时,可用浸湿的衣物披裹身体,捂住口鼻冲出去。( )