2. 外语
  3. After years of research, scientists have ______the virus that is responsible for the disease.

After years of research, scientists have ______the virus that is responsible for the disease.

admin2011-02-04  69
问题 After years of research, scientists have ______the virus that is responsible for the disease.
选项 A、recognized
B、identified
C、guaranteed
D、notified
答案B
解析 语义连贯题。[A]“认出，承认”；[B]“确定，识别”，强调经过了一个过程才确定；[C]“保证，担保”[D]“通知，宣告”。题干中的years of research (数年研究)提示科学家最终得到了结果，虽然这个过程漫长，但最终还是确定了这种病毒，[B]符合题意，是答案。
转载请注明原文地址:https://kaotiyun.com/show/sso7777K
0

大学英语六级

相关试题推荐
随机试题
最新回复(0)