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The basic causes are unknown although certain conditions that may lead to cancer
The basic causes are unknown although certain conditions that may lead to cancer
游客
2025-03-24
29
管理
问题
The basic causes are unknown although certain conditions that may lead to cancer have been
选项
A、identified
B、guaranteed
C、conveyed
D、notified.
答案
A
解析
identify“识别,鉴别”;guarantee“保证”;convey“运送;传达”;notify“通知”。题句意为:“虽然导致癌症的某些条件已经鉴别出来,但是根本的原因还不得而知。”
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