临睡前使用巴比妥类药物催眠后次展出现乏力属于（）
A.副作用
B.毒性反应
C.停药反应
D.后遗效应
E.变态反应
参考答案：D
Professor Li gave us a very useful ________ on how to prepare for the exam.
A．advice
B．information
C．experience
D．suggestion
Bill and I are brothers. Mr Red is ______ father. [ ]
A. his
B. my
C. us
D. our
