题库
题库
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| 单选题 | German chemicals giant BASF saves 200 million a year by________. | 查看答案 |
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| 单选题 | If you add enough insulation to your house, you may be able to________. | 查看答案 |
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| 单选题 | Some countries have tried to jump-start the market of heat pumps by________. | 查看答案 |
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| 单选题 | What does the European Union plan to do? | 查看答案 |
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| 单选题 | The author says she’ll one day take her clients to dinner in order to ________. | 查看答案 |
| 单选题 | The author was disappointed to find that ________. | 查看答案 |
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