How Different Will Things Be 20Years From Now？We asked readers to write to tell us about their predictions for life in the future．Here are a few of their responses．

How Different Will Things Be 20Years From Now？We asked readers to write to tell us about their predictions for life in the future．Here are a few of their responses．

46． C 细节理解题．由Pollution will be the most serious global problems．-----Li Ling，Beijing 可知李明觉得最严重的问题是污染问题，选C．47． A 词义猜测题．由they will bereplaced（代替） by online shopping malls可知此句表示我觉得商店会消失，选A．48． A 细节理解题．由I think it's more likely that we'll be walking and riding bikes more可知如果没有石油，我们可能会步行和骑自行车更多，比起汽车，这是更清洁的交通方式，选A．49． D 细节理解题．由We'll be able to buy anything，even buildings可知D选项的我们可以在家在网上买任何东西是正确的，选D．50． C 归纳概括题．由How Different Will Things Be 20Years From Now？We asked readers to write to tell us about their predictions for life in the future．Here are a few of their responses以及下面每个人的回复可知本文主要讲的是二十年后会有什么不同，C选项作答案最好．