Question

--Growing population resulted in growing rubbish.
--There is possibility that rubbish ________the major threat to human beings.

A．becomes

B．is becoming

C．became

D．would become

Answer 1

B

    
试题分析:考查动词时态。根据语境可知此处是对未来的预测，所以用现在进行时态表示将来。句意：--逐渐增多的人口造成了越来越多的垃圾。---有可能垃圾会成为人类最大的威胁。