1. A 2. B 3. B 4. C
--- What are your plans for the coming weekend?
--- I have to ______________ at home. You know there will be an important exam next week.
A．look after my sister
B．go over my lessons
C．help with the housework
D．turn on the radio
第一产程活跃期是指宫口扩张
A．1～3cm
B．2～5cm
C．3～7cm
D．3～9cm
E．3～10cm
