天冬的功效是()。沙参的功效是()。
A.滋补肝肾
B.补脾益气
C.滋阴除烦
D.清肺降火
E.清肺养阴
参考答案:D,E
不含氢、氧二种元素的化合物,可能属于( )
A.酸
B.碱
C.盐
D.氧化物
— Who should be responsible for the accident?
— The boss, not the workers. They just carried out the order _____.
[ ]
A. as told
B. as are told
C. as telling
D. as they told