为防止川乌中毒，应注意（）
A.剂量不宜过大
B.严格炮制
C.入汤剂宜先煎、久煎
D.内服多用生品
E.与半夏配伍同用
参考答案：A, B, C
学校在小云家的西南方，小云家在学校的（ ）方。
While she ________ TV in the sitting room, the bell ________. [ ]
A. watches, rings
B. is watching, rang
C. was watching, rang
D. watched, was ringing
