请解释何为电动机状态？
参考答案：
转子的转速低于同步转，由电动机带动负载运行的情况，叫电动机状态。
用所给单词的适当形式填空。
1. He often ______ (buy) cakes from the bakery.
2. ______ (not be) late for school!
3. I have so many things ______ (do).
4. Look, the dog ______ (cross) the street.
5. Do you want ______ (tell) me anything about your school?
6. Look, the children are on ______ (they) way home.
7. That's______ (Li Lei) favourite store.
8. The girl ______ (pass) the shop every day.
缓行的或温和的通货膨胀是每年上涨率约为（）。
A.1%～2%
B.2%～3%
C.3%～4%
D.4%～5%
