2019-2020全国一百所名校单元测试示范卷地理一地球与地图

2019-2020全国一百所名校单元测试示范卷地理一地球与地图，查看2019-2020全国一百所名校单元测试示范卷地理一地球与地图的答案，请关注微信公众号：考不凡
Nowadays， there are more and more __ in __. It is estimated that ___. Why have there been so many ____? Maybe the reasons can be listed as follows.The first one is ______. Besides，_____. The third one is _____. To sum up， the main cause of it is due to _____. It is high time that something were done upon it. For one thing，_____. For another thing， _____. All these measures will certainly reduce the number of _____.