Although trains may use energy more (i)_________than do automobiles, the latter move only when they contain at least one occupan

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问题 Although trains may use energy more (i)_________than do automobiles, the latter move only when they contain at least one occupant, whereas railway carriages spend a considerable amount of time running up and down tracks (ii)_________, or nearly so.
Blank (i)      Blank (ii)
A. lavishly    D. vacant
B. efficiently E. unimpeded
C. routinely   F. overloaded

选项

答案B,D

解析 先做空格(ii),所在部分的逻辑连接词为whereas(然而),引导让步转折,让步的部分与转折的部分取反。the latter(后者)指代的是automobiles(汽车)。转折的部分the latter move only when they contain at least one occupant(汽车只要至少有一名乘客就可以开动),让步的部分与之取反,则应该表示的是火车当乘客数量小于1的时候也开动,因此空格(ii)填入表示“小于1”这个概念的词,选D项vacant(空着的)。再做空格(i),逻辑连接词为although,引导让步转折,让步的部分与转折的部分取反。转折部分:the latter move only when they contain at least one occupant, whereas railway carriages spend a considerable amount of time running up and down tracks _________, or nearly so. (汽车只要至少有一名乘客就可以开动,然而火车花了大量的时间几乎是空着跑来跑去),火车空着跑来跑去是一种浪费能量的表现,因此让步部分要体现火车在使用能源方面比汽车更节约,选B项efficiently(有效地)。
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