问题
解答题
甲乙两地相距140千米，一辆汽车从甲地开往乙地用了4.5小时，返回时用了5.5小时，这辆汽车往返一次平均每小时行多少千米？
答案
140×2÷（4.5+5.5）
=280÷10，
=28（千米）；
答：这辆汽车往返一次平均每小时行28千米．
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甲乙两地相距140千米，一辆汽车从甲地开往乙地用了4.5小时，返回时用了5.5小时，这辆汽车往返一次平均每小时行多少千米？
140×2÷（4.5+5.5）
=280÷10，
=28（千米）；
答：这辆汽车往返一次平均每小时行28千米．
| 用所给单词的适当形式填空。 |
| 1. Wang Mei tried three more _____ (time). 2. Jim runs _____ (slowly) than Li Lei. 3. Try _____ (do)! You'll get it. 4. We must understand the text at _____ (one). 5. Class One _____ (have) a meeting this afternoon. 6. There are many new words in the _____ (five) lesson. 7. How many _____ (time) have you seen the film? 8. —When _____ your sister _____ (go) to Ji'nan? —Next week. 9. Why _____ (not say) it again? |