镰仓时代的作家写作主体是（）？
A、僧侣阶层
B、贵族妇女阶层
C、农民阶层
D、武士阶层
参考答案：A
国家对从事商业银行业务的金融企业，资本充足率和核心资本充足率的最低要求分别是多少？资本充足率如何计算？
— Is there a bus to the downtown?
— There _____ be, for it is too late now. You'd better take a taxi. [ ]
A. won't
B. mustn't
C. can't
D. needn't
