A-A+
The manager of the company firmly believed tha
问题详情
The manager of the company firmly believed that one of the important ______ sources of new customers was the children"s market.
A．unfolded
B．unknown
C．unsolved
D．untapped
参考答案
正确答案：D
解析：形近识别四个选项均有前缀un-，但词义各不相同。A．unfolded展开的，解开的；B．unknown未知的；C．unsolved，未解答的，未解决的；D．untapped未使用的，未开发的。本句要表达的是：未开发的客户资源是儿童市场，所以答案为D。
