单选题
1.00分
At the meeting both sides exchanged their views on a wide scope of topics they were interest-ed in.
参考答案: D
参考解析: 句意:会议上双方就感兴趣的许多话题交换了意见。extent:程度,number:数量,collection:收藏、系列 ,range:范围,最符合题意。