Most of us will not want mercy killing or euthanasia until the last minute and even assisted suicide campaigners like Timothy Le

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问题 Most of us will not want mercy killing or euthanasia until the last minute and even assisted suicide campaigners like Timothy Leary often back out of the act and die natural deaths.

选项 A、prop up
B、flinch
C、fall behind
D、retain

答案B

解析 back out of意为“退出,取消”。B选项:flinch意为“回避,退缩”,与画线单词的意义相符,如:The world community should not flinch in the face of this challenge.国际社会在面对这一挑战时不应该回避。故选B。在其他三项中,A选项:prop up支撑,维持;C选项:fall behind落后,下降,逾期(付款等);D选项:retain保留,保持,都与画线单词的意义不符。
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