2. 外语
  3. Doctors sometimes ______old cures when modem medicine doesn’t work.

Doctors sometimes ______old cures when modem medicine doesn’t work.

admin2009-01-05  40
问题 Doctors sometimes ______old cures when modem medicine doesn’t work.
选项 A、fall on
B、fall down on
C、fall back on
D、fall in upon
答案C
解析 fall back on 意思是“借助于，依赖，依靠”。fall down(on) 意思是“失败，未能符合要求”。fall on 意思是“袭击，攻击：遭受，遭遇：由……负担”。fall in upon意思是“不期而遇”。
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