2. 职称英语
  3. The______of medical knowledge are being pushed farther onwards as time goes on.A

The______of medical knowledge are being pushed farther onwards as time goes on.A

游客2025-04-04  2
问题 The______of medical knowledge are being pushed farther onwards as time goes on.
选项 A、front
B、border
C、frontiers
D、edge
答案 C
解析 frontier n.(本义)边境，边界；边疆：(引申)(科学开拓的)新领域(beyond the frontier of knowledge；at the frontier of space exploration)。front n.前面，正面：前线，战线。border n.边界，边境；边缘，界线。edge n.边缘，棱；刀口。
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