单项选择题

What is the monthly outflow of blood from the uterus of nonpregnant women from puberty to menopause?

A．hemorrhage
B．hemophilia
C．menstruation
D．manipulation
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单项选择题
《论语》中提出“不愤不启，不悱不发”，这体现了（）教学原则。
A. 巩固性原则
B. 因材施教原则
C. 循序渐进原则
D. 启发性原则
问答题
Passage TwoQuestions 16 to 18 are based on the passage you have just heard. A、 Slang is used in more and more situations. B、Slang is still tested at the laboratory stage. C、Slang comes and goes after a trial period. D、Slang has changed our view of the world.
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