题目： The scientists are now trying to discover what use could be ________ such material.A．made outB．made upC．made ofD．made from 答案： 答案：C因为此题是make use of (利用) 的被动式。
题型：选择题 _______the end of last month, Tina _______ a prize.[ ]A. In, won B. In, wins C. At, won D. At, wins 查看答案
