Some greenhouse gases occur naturally in the atmosphere, while others______(由人类的

游客2023-07-14 12

问题 Some greenhouse gases occur naturally in the atmosphere, while others______(由人类的活动造成).

选项

答案 result from human activities

解析 “由……造成”直接用result from...的主动形式。

转载请注明原文地址:https://www.tihaiku.com/zcyy/2835215.html

相关试题推荐

随机试题

最新回复(0)

(缺乏自信心的人)____________relytoomuchonothers’encouragement.Thosewholackself