既有安神之效又能平肝潜阳的是哪一组（）。
A.龙骨、牡蛎
B.牡蛎、代赭石
C.代赭石、珍珠母
D.磁石、龙骨
E.磁石、石决明
参考答案：D
He didn't ________ what I said because his mind was on something else.
A．hold on
B．hang on
C．take in
D．get over
大叶性肺炎好发部位是（）
A.右肺上叶
B.左肺下叶
C.右肺尖部
D.右肺上叶下部近胸膜处
E.右肺锁骨下区
