若集团公司下属业务单元地区分布较广，业务种类较多时，可选择（）。
A.U
B.H
C.M
D.Y
参考答案：B
— Where is Bob? I cannot find him anywhere.
— He ________ have been off long. I heard him make a call just now. [ ]
A. shouldn't
B. can't
C. mustn't
D. needn't
患者，女，45岁，胁肋胀痛，脘腹灼热疼痛，口苦，舌红苔薄，脉弦，宜首选（）
A.枳实
B.木香
C.香附
D.陈皮
E.川楝子
