题目

The teacher said that__ of the boys would take part in the talent show. A. three five    B. three fives  C. thirds fifths      D. three fifths 答案：D 【解析】数词的考察 分数的分子用基数词，分母用序数词，当分子不是一的时候，分母要用序数词的复数形式。The company has a free long-distance telephone number ________ customers may call with any question they have about its products.A.so thatB.althoughC.asD.even if