三元催化器中三元是指三种稀有金属()。
A、铂
B、铑
C、钯
D、钛
参考答案:A, B, C
We did the job as fast as we could, ___ to finish it earlier.
A.hoping
B.to hope
C.hoped
D.being hoped
肾阳虚带下的主证错误的是
A.白带清冷,量多,质稀薄,终日淋漓不断
B.腰酸如折,小腹冷感
C.小便频数清长,夜间尤甚,大便溏薄
D.精神疲倦,两足跗肿
E.舌质淡,苔薄白,脉沉迟