第六章单元测试
Periods may occasionally start as young as___________ years old and still be considered normal.
The first period usually begins _____________.
A menstrual cycle is counted from_____________ to the first day of the next period.
When you menstruate, your body sheds the __________of the uterus (womb).
Menstruation is a woman's _____________ bleeding.
A:6
B:8
C:10
D:7
答案:8
A:between10 and 16 years of age B:between 12 and15 years of age C:between 10 and 12 years of age D:between 15 and 16 years of age
A:the first day of the period B:the last but one day of the period C:the second day of the period D:the last day of the period
A:lining B:hormones C:eggs D:blood
A:irregular B:monthly C:weekly D:yearly
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