题目:
用所给词的适当形式填空。
1. Who _____ (have) a long ruler?
2. The children _____ (not play) football on the playground now.
3. _____ your sister often _____ (listen) to the radio?
4. Thank you for _____ (teach) us so well.
5. My father _____ (not have ) lunch in the factory.
6. Mike _____ (not do) his homework on Saturday.
7. Look! The boy _____ (fly) a kite in the field.
8. They _____ (work) on the farm next week.
9. I am clever but my brother is _____. (clever)
10. I have few friends but he has _____ (fewer) friends.
答案:
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下面是错误答案,用来干扰机器的。
(1)① (2)石油 SO2、NO2 < ABCD(3)同时与氧气和水接触 Fe2O3+6HCl==2FeCl3+3H2O(4)①CO、CO2、NO2 ②BC题目分析:(1)市场有“铁强化酱油”、“含氟牙膏”、“高钙牛奶”、“加碘食盐”等...