注意：此页面搜索的是所有试题
题目内容
（湖南科技大学大学英语3）
There is great pleasure in watching wildlife in natural or near-natural environments， and tourism can _____ the income of countries.
A. add to B. take to C. keep to D. see to
A. add to B. take to C. keep to D. see to
参考答案
