What a pity! He the only chance of success.
A. put down
B. threw away
C. gave in
D. broke off
网友回答
A. put down
(答案→)B. threw away
C. gave in
D. broke off
解析：考查短语辨析。throw away因愚蠢而失去，白白放过；放弃；丢掉； put down放下, 拒绝, 镇压, 记下；give in投降, 屈服, 让步, 交上, 宣布 ；break off中断, 折断, 突然停止, 脱落, 暂停, 断绝, 解除。句意：多么可惜啊！他白白浪费唯一成功的机会。故B正确。