朱砂的用法是
A．打碎先煎B．冲服C．包煎D．烊化E．后下
参考答案：B
解析：朱砂火煅则析出水银而有大毒，故忌火煅，宜研末冲服。
The experiment shows that proper amounts of physical exercise, if _______ regularly, can make a
difference to our health.[ ]
A. being carried out
B. carrying out
C. carried out
D. to carry out
腰麻后常见的并发症是
A．血压下降
B．头痛
C．恶心、呕吐
D．尿潴留
E．休克
