B）break out （战争，争吵，瘟疫等）爆发；逃脱，突围；Fire broke out in the kitchen. 厨房突然发生了火灾。World War II broke out in 1939. 第二次世界大战是1939年爆发的。

　　C）break through 突破，冲破，突围；After the storm the sun broke through the clouds. 风暴过后太阳冲破了云层。At last， those physicians and specialists broke through in their fight against heart disease. 那些内科医生和专家们终于在同心脏病的斗争中取得了突破。The guerrillas soon broke through. 游击队很快就突围了。

　　D）break off 中断，停止讲话；When Bob came in， she off her talk with me and went to greet him. 鲍勃走进来时，她中断了与我的谈话而和他打招呼。

　　3. When the whole area was _____ by the flood the government sent food there by helicopter.

　　A）cut away B）cut down C）cut up D）cut off

　　3. D 该地区被洪水完全隔离后，政府用直升机空运食物去。

　　A）cut away 切除，剪去，砍下；They cut away all the dead branches from the tree. 他们把树上的枯枝全都砍掉了。

　　B）cut down 减少（消费，开支）；to cut down on smoking 减少抽烟；C）cut up 切碎；割伤；使伤心；Jean was really cut up when her husband left her. 在丈夫抛弃她之后，简痛苦极了。

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