问题
选择题
--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
答案
答案：B
题目分析: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。