A-A+
The cost to reduce the greenhouse gas emission
问题详情
The cost to reduce the greenhouse gas emissions is in proportion to the time spent before we take an action.
A．Y
B．N
C．NG请帮忙给出正确答案和分析，谢谢！
参考答案
正确答案：A
解析：由题干中的关键词cost(花费)和time(时间)定位到小标题Scientists：Techno- logy already exists下的第五段：The longer we wait to take conceded action，the greater the impact will be…the more it will cost to achieve the reduction，题目是原文的同义替换，由此得出题目说法正确。
