摘要： A.“介词+关系代词 不用that.
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Translation. ( 20 points )
1.老实说，这本书对我来说没有任何价值。(value n.)
2.去年，一场可怕的洪水切断了这个村庄的食物供给。(cut off)
3.最近我们班就垃圾食品是否对人的皮肤有害展开了一次讨论。(harm n.)
4.随着互联网的普及，网购已经被越来越多的人所接受。(as; on-line shopping)
5.很抱歉，我不能理解你在会上提出的建议。(make sense；定语从句)
6.政府必须采取有效措施保护这些历史遗产不受破坏。(protect ... from)
7.我们可以循环使用课本，以达到节约和减少污染的目的。(recycle; so as to)
8.这是人类首次认真思考自己的活动对环境造成的影响。(It’s the first time; effect)
9.怎样保持健康是我们经常谈论的一个话题。(介词+关系代词的定语从句）
10.越来越多家庭节假日期间外出旅行，由此导致很多地方交通拥挤不堪。(a/an ... number of; as a result)
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给下列复合句中的定语从句填上正确的介词和关系代词。
1. We saw several natives advancing towards our party, and one of them came up to us we gave some bells and glasses.
2.1 was given three books on cooking, the first I really enjoyed.
3. The students visited the farm the farmers raise varieties of beef cattle.
4. The gym the gymnast is doing gymnastics is a newly-built one.
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2.1 was given three books on cooking, the first I really enjoyed.
3. The students visited the farm the farmers raise varieties of beef cattle.
4. The gym the gymnast is doing gymnastics is a newly-built one.
根据句子意思，在句子的第一个空白处填入介词，在第二个空白处填入关系代词whom或which。
The old man has two sons, one ________ ________ is a teacher．