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X1U1Extended Reading-2Learning objectives:
1.Keep theimportant wordsand phrasesin mind.
2.Learn someimportant sentencestructures.Stepl Importantphrases:走在人行道上至今,直到现在把地球敲开巨大的压力内部结构堵上（使）变狭窄回以…为依据在几年内分析地震波地球的地质地球的组成为…铺平道路钻很深的洞使（问题等）容易理解到达地幔_______________________Step2Language points:
3.The intensepressure andheat inside theEarthcan close up adeep holeorbreak adrill.close up:1）（使）变狭窄2）（使）靠强，费紧3）（尤指临时）关门停业关闭，停业close down（）接近，几乎be closeto（）与某人亲密be closeto sb.bring...to a close使……结束come to aclosedraw结束toaclose快要结束离……很近closeuptoclose by临近地（的）；近旁的（地）【语境应用】用短语完成句子close1If thefirms failedto makeenough money,they would.2Why dontwe andgo outfor lunch3She wastears whenhearing thesad news.4The troopsand preparedto beginthe attack.
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