标签:职称英语考试真题,职称英语考试答案, 2017年职称英语考试试题及答案_理工类A级_全真模拟试题(6),
最新一年职称英语考试试题及答案_理工类A级_全真模拟试题(6)
第三篇
Greenhouse Effect
A greenhouse is a building made of glass which is used for keeping plants warm when the outside temperature is low. In a similar way, there are several gases in the atmosphere which trap the heat generated by the su, 大小:795 KB