D 本题考查名词性从句中it做形式主语引导的主语从句。解题步骤:1. 确定从句:从空格到today,understand动词后为宾语从句。2. 确定成分: 从句___ controls the flow of carbon dioxide in and out the atmosphere today. 从句缺少主语,故选D。句意:如今什么控制着二氧化碳进出大气层的流动已经是非常好理解的。结果...
It is pretty well understood ___ controls the flow of carbon dioxide in and out the atmosphere today.( )A.thatB. whenC. whatD. how 相关知识点: 试题来源: 解析 答案:C.根据句意和结构可知这句话使用it作形式主语,understood后面是这句话的主语从句,从句中缺少主语用what引导,that引导主语从句的...
In the atmosphere, carbon dioxide allows the sun’s rays to enter but prevents the heat from escaping.According to a weather expert’s prediction, the atmosphere will be warmer in the year 2050 than it is today, if man continues to burn fuels at the present rate.If this warming up took...
carbon dioxide acts rather like a one-way mirror or the glass in the roof of a greenhouse which allows the sun's rays to enter but prevents the heat from escaping. According to a weather expert' s prediction, the atmosphere will be 3℃ warmer in the year 2050 than it is today, if ...
It is pretty well understood ___ controls the flow of carbon dioxide in and out the atmosphere today. [ ]A. that B. when C. what D. how 相关知识点: 试题来源: 解析 答案:C 解析: 考查what引导的主语从句。what引导的主语从句在句中可充当主语或宾语,而that只起连接作用,不作成分,意义上what...
【题目】阅读理解In th e atmosphere, carbon diorid e acts rat her lik e a one-way mirror or th e glass in the roo f o f a greenhous e which allows th e sun's r ays to enter but prevents th e heat from escapi ng.According to a weather expert' s predictio n, th e ...
It is pretty well understood ___ controls the flow of carbon dioxide in and out the atmosphere today.A. that B. when C. what D. how 相关知识点: 试题来源: 解析 C 该题考查it作形式主语,what引导主语从句的用法.what引导主语从句,有词汇意义并在主语从句中作主语;that引导主语从句时只起引导...
搜索智能精选题目【题文】It is pretty well understood ___ controls the flow of carbon dioxide in and out the atmosphere today.A.that B.when C.what D.how答案【答案】C
1It is pretty well understood ___ controls the flow of carbon dioxide in and out the atmosphere today. A. that B. when C. what D. how 2It is pretty well understood ___ controls the flow ofcarbon dioxide in and out the atmosphere today. A. that B. when C. what D. how 3It...
【题文】 It is pretty well understood___ controls the flow of carbon dioxide in and out the atmosphere today.. 相关知识点: 试题来源: 解析 【答案】A. 【解析】试题分析: 句意:现在人们非常清楚是什么控制着二氧化碳进出大气层。分析句子结构可知it是形式主语,后面的主语从句缺少主语,用连接代词,故选...