句型转换。

1. Hu Bin plays soccer three times a week. (对划线部分提问)

    __________ does Hu Bin play soccer?

2. Jane often watches TV for a little while after supper. (对划线部分提问)

    __________ does Jane often watch TV after supper?

3. Mike usually walks to school every day. (变为同义句)

    Mike usually goes to school __________ every day.

4. She goes to bed at about 9:45. (变为同义句)

    She goes to bed at about a __________ to __________.

5. Li Xiang often goes to school by bike. (变为同义句)

    Li Xiang often __________ a __________ to school.

预防麻疹的关键措施是

A．对病人要隔离至出疹后5日

B．避免易感者接触麻疹病人

C．病室每日要通风30分钟

D．普遍接种麻疹减毒活疫苗

E．流行期易感儿肌注入血丙种球蛋白