经分选后的钛精矿是()
A.白色
B.黑色
C.银灰色
参考答案:B
Annoyed by the salesman’s bad manner, John chose _____ of the two shirts on sale and left.
A.any
B.either
C.neither
D.none
一患者四肢倦怠。疲乏无力,嗜卧懒言。
治疗时不宜用的药物是()
A.人参
B.党参
C.西洋参
D.太子参
E.丹参