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CET4
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短篇新闻_3
baby
CET4历年真题
2024
6月_第一套
听力
229 次浏览
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考试
2025-09-10
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5
单选题
分值:7.1
It has helped solve several murder cases.
It has become a star police dog in Beijing.
It has surpassed its mother in performance.
It has done better than naturally born dogs.
6
单选题
分值:7.1
To speed up investigation into criminal cases.
To test the feasibility of cloning technology.
To cut down training expenses.
To reduce their training time.
7
单选题
分值:7.1
Cloning is too complicated a process.
The technology is yet to be accepted.
Cloning is ethically controversial.
The technology is too expensive.
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