When will the new driving laws come into________?A．useB．effectC．serviceD．existen
题型：不详难度：来源：
When will the new driving laws come into________?| A．use | B．effect | C．service | D．existence |
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答案
| B |
解析
| effect come into effect“开始生效”；come into use“开始使用”；come into service“投入服务/使用”；come into existence“存在”。 |
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