常出现口唇单纯疱疹的疾病是（）。
A.大叶性肺炎
B.支气管哮喘
C.慢性失血性贫血
D.慢性支气管炎
E.肝炎
参考答案：A
— I hear Jane has gone to the Holy Island for her holiday.
— Oh, how nice! Do you know when she _____? [ ]
A. was leaving
B. had left
C. has left
D. left
按照资本资产定价模型，不影响特定股票必要收益率的因素是( )。
A．股票的β系数
B．市场组合的平均收益率
C．无风险收益率
D．经营杠杆系数
