I think -______ of the materials I listened to at the beginning of the exam____easy

题目

I think -______ of the materials I listened to at the beginning of the exam____easy
A two third:is B second three:are C two third:are D two third:are
为什么 不说 不给

答案

第一空two thirds
第二空are
原因：分数的表示方法就是 分子用基数词,分母用序数词 分子大于一时 分母要加s
所以是two thirds
因为material加了s 所以 材料的三分之二仍然看做是可数名词的复数 谓语动词用 are