—Where _______ your pen pals from?
—The United States.[ ]
A. does
B. do
C. is
D. are
答案:D
矿井防隔水煤(岩)柱专门设计,经谁组织有关单位审查批准后实施?
不寐属脾虚血亏,心神失养者,宜选用的方剂是()
A.交泰丸
B.酸枣仁汤
C.养心汤
D.归脾汤
E.安神定志丸