(2013·湖北，22)Carbondioxidewhichmakesabetweenusandthesunpreventsheatfromgettingoutoftheatmosphereeasilysotheearthisbecomingwarmer.A．differenceB．comparisonC．connection

Question

(2013· 湖北， 22)Carbon dioxide which makes a________between us and the sun prevents heat from getting out of the atmosphere easily so t he earth is becoming warmer.

A ． difference B ． comparison

C ． connection D ． barrier

 

Answer 1

D
句意：二氧化碳，在我们与太阳之间设置了一道屏障，阻止热量轻易地散发到大气层中，因此地球正变得更暖和。A项意为“区别，不同”；B项意为“对比，比较”；C项意为“联系”；D项意为“障碍，屏障”。故选D项。