2. 外语
  3. The basic causes are unknown, although certain conditions that may lead to cancer have been ______.

The basic causes are unknown, although certain conditions that may lead to cancer have been ______.

admin2011-05-29  66
问题 The basic causes are unknown, although certain conditions that may lead to cancer have been ______.
选项 A、identified
B、guaranteed
C、notified
D、conveyed
答案A
解析 identify意为：识别，认出；guarantee保证，使确信；notify通知，告知；convey传递，传达(信息或消息等)。句意：致癌的根本原因还不清楚，可是已经发现某些导致癌症的情况。
转载请注明原文地址:https://kaotiyun.com/show/lH6O777K
0

考博英语

相关试题推荐
随机试题
最新回复(0)