题目内容
18.China made a promise to the world in the Copenhagen Summit that by 2020,the carbon-intensity(碳排放强度) of its economy ______ fall 40% to 45%.( )A. | shall | B. | may | C. | must | D. | should |
分析 在哥本哈根峰会上中国向世界承诺到2020年为止,其经济的碳排放强度会下降40%至45%.
解答 答案是A.本题考查情态动词shall的用法.情态动词shall常常用在二、三人称的陈述句中表示"命令、警告、允诺";根据句中"China made a promise"推断用shall表示承诺,所以答案选A.
点评 要在正确理解情态动词的基本含义的基础上,整体理解语境中的情感态度,做出合理的判断.
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