* * 流血由少渐多,腹痛加重,宫口逐渐开大,有组织物堵塞于宫口:
A.不完全流产B.稽留流产C.难免流产D.先兆流产E.完全流产
参考答案:C
-It’s time that I ____ on night duty. I must be off now.
-I’d rather you ____ at home on such a family reunion night. [ ]
A. am, stay
B. was, stayed
C. will be, to stay
D. be, will stay
教师可以通过哪些途径影响课堂气氛?()
A.接受
B.反馈
C.输入
D.输出