长期使用抗生素易引起。
A．厌氧芽胞杆菌感染B．疱疹病毒感染C．无芽胞厌氧菌感染D．病毒感染E．肝炎病毒感染
参考答案：C
安徽一年内有一天白昼时间最长，这一天应该是[ ]
A、夏至
B、东至
C、春分
D、秋分
—What did Yang Ying say?
—She said they _____ a school trip the next weekend. [ ]
A. will have
B. had
C. would have
D. have
