精选优质文档-倾情为你奉上Unit 4 THE EARTH IS BECOMIG WARMER-BUT DOES IT MATTER? 全球在变暖这会带来什么影响吗？During the 20th century the temperature of the earth rose about one degree Fahrenheit. 在20世纪期间，地球温度大约升了华氏1度。That probably does not seem much to you or me, but it is a rapid increase when compared to other natural changes. 这个数值对你我来说很可能是无所谓的，但是，跟多数自然变化相比较而言，这却是种快速的增长。So how has this come about and does it matter? 这种温度的增长是怎么产生的呢，它要紧吗？ Earth cares Sophie Armstrong explores these questions. “关爱地球”组织的索菲
