Edison is said to _____the first telephone. [ ]
A. find
B. discover
C. invent
D. found
答案:C
痰动于肾证见形体畏寒、腰膝冷痛症状者首选方为()
A.六味地黄丸
B.济生肾气丸
C.金水六君煎
D.苓桂术甘汤
E.八珍汤
请写出10种用自由基聚合获得的高聚物。