疳证的病位主要在（）。
A.脾肾
B.肝肾
C.脾胃
D.心脾
E.肝脾
参考答案：C
The contract is very important for both of you, so studying it ________before signing is necessary.
A．in return
B．in exchange
C．in detail
D．in turn
每制出一立方氢气耗年个斤凝结水（）公斤。
A、1.4
B、1
C、0.9
