Have they __the new type of car before they are put on the market?A.examined B,checked C.inspected D.tested 请说明选什麽,并给出理由.理由要详细.急需!谢谢!

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Have they __the new type of car before they are put on the market?A.examined   B,checked  C.inspected  D.tested 请说明选什麽,并给出理由.理由要详细.急需!谢谢!
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Have they __the new type of car before they are put on the market?A.examined B,checked C.inspected D.tested 请说明选什麽,并给出理由.理由要详细.急需!谢谢!
Have they __the new type of car before they are put on the market?
A.examined B,checked C.inspected D.tested 请说明选什麽,并给出理由.理由要详细.急需!谢谢!

Have they __the new type of car before they are put on the market?A.examined B,checked C.inspected D.tested 请说明选什麽,并给出理由.理由要详细.急需!谢谢!
examin 考试
check 检查
inspect 调查
test 测试,特别指的是产品方面的测试
答案D

Have they tested the new type of car before they are put on the market?
我会选tested,因为我自己就是一个测试工程师,产品投入到市场前都是要经过测试的。