问题
填空题
据测算，上世纪末，我国流失土壤5000000000吨，用“亿”做单位是______吨，西部草地减少了12793000公顷，用“万”做单位是______公顷．所以保护环境和生态是一项十分迫切而重要的任务．
答案
5000000000=50亿．
12793000=1279.3万；
故答案为：50亿，1279.3万．
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据测算，上世纪末，我国流失土壤5000000000吨，用“亿”做单位是______吨，西部草地减少了12793000公顷，用“万”做单位是______公顷．所以保护环境和生态是一项十分迫切而重要的任务．
5000000000=50亿．
12793000=1279.3万；
故答案为：50亿，1279.3万．
| 选用所给动词的正确形式完成句子。 | |
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| 1. He _____ tired after a long walk yesterday. 2. I don’t want _____ for a drive. 3. Thanks for _____ care of my bird. 4. Could you please _____ him some water? 5. We _____ more drinks and snacks. Could you buy some? 6. Do you often help _____ dinner? 7. I don’t like _____ the dishes because it’s boring. 8. She can’t go out. She _____ to do her homework . 9. When did they _____ Beijing for Shanghai? 10. I’m going to _____ on my English project and then meet my friends. |