指出不属于火疳的病因（）
A.肝火亢盛
B.肺热亢盛
C.心肺热盛
D.湿热内蕴
E.肺经阴虚
参考答案：A
A．The man thought the paper was easy.
B．They both had a hard time writing the paper.
C．The woman thought the paper was easy.
D．Neither of them has finished the assignment yet.
下列各选项中两种粒子所含电子数不相等的是[ ]
A．羟基（－OH）和氢氧根（OH-）
B．甲烷（CH4）和铵根（NH4+）
C．氨气（NH3）和水（H2O）
D．双氧水（H2O2）氯化氢（HCl）
