题目内容:
The third paragraph mainly tells us that __________.
A. a network of centers has been quite effective in reducing suicide B. a network of centers help the callers to realize that suicide is a common social problem
C. people are making efforts to help those who tend to commit suicide and in a way, they are successful
D. in the US, people who want to commit suicide call a network of centers to get help
参考答案:
答案解析: