Re: [SC. ] PP2 #43

看板GMAT (GMAT入學考試)作者tootoobenee (A級垂耳兔)時間13年前 (2012/08/23 17:15)推噓1(1推 0噓 0→)

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※ 引述《kanei (樂觀一點吧)》之銘言： : Although ice particles in the upper atmosphere benefit Earth in that they : reflect and absorb solar radiation, acting as a global thermostat and thus : keeping Earth from either burning up or freezing over, they also accelerate : the destruction of the ozone layer by reacting with chlorofluorocarbons : (CFC's). : A. acting as a global thermostat and thus keeping Earth from either burning : up or freezing over, they also accelerate : B. acting as a global thermostat and thus keeping Earth either from burning : up or freezing over, while also accelerating : C. act as a global thermostat and thus keep Earth from either burning up or : freezing over, while also accelerating : D. they act as a global thermostat that thus keeps Earth either from burning : up or freezing over, even though it also accelerates : E. they act as a global thermostat to thus keep Earth from either burning up : or freezing over, but they also accelerate : 答案A，這題我看了半天自己能了解的點只有B的either..or不平衡，還有E的but和 : although意思重覆。Manhattan和其他討論串看了半天還是不了解，煩請大家指點， : 謝謝! 1. 選項B/C都找不到主要子句主詞動詞,是fragment sentence. 2. 對比關係應該為ice particles benefit earth (+)對比 ice particles accelerate the destruction of the zone(-), 答案D/E變成和they act as a global thermostat做對比. 3. D選項的it指代ice particles單複數不一致. 4. 答案B有正確答案長相, 擺在子句後表達因果關係的thus keeping - 水喔！！ -- A兔GMAT作戰中心 http://tw.myblog.yahoo.com/tootoo5478/ 歡迎加入A兔的FB社團A2 GMAT掌握最新考試資訊! -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 111.248.83.218