[单选题]Directions: In this part there is a sentence with four choices marked A, B, C and D. Choose the one that best completes the sentence.A new study indicates that basic steps taken by people daily can go a long way in （） the greenhouse gas emission.

cutting down

taking down

pulling down

breaking down

正确答案：A

题目解析

cut down——砍倒，减少；take down——写下，拿下；pull down——拆毁；break down——出毛病，关系破裂。结合句意可以确定表示“减少”的cut down最符合句意，故选A。
句意：一项新的研究表明，人们每天采取的基本措施对减少温室气体排放有很大帮助。

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[单选题]Directions: In this part there is a sentence with four choices marked A, B, C and D. Choose the one that best completes the sentence.A new study indicates that basic steps taken by people daily can go a long way in （ ） the greenhouse gas emission.