题目内容：
What is the main idea of the lecture?
参考答案：
答案解析：
不定项选择题：What is the main idea of the lecture?
- 题目分类：托福
- 题目类型：不定项选择题
- 查看权限：VIP
Listen again to part of the talk．Then answer the question．
Listen again to part of the talk．Then answer the question．
What is the talk mainly about?
What is the talk mainly about?
Why does the professor discuss cross-cutting?
Why does the professor discuss cross-cutting?
The phrase sift through in paragraph 4 is closest in meaning
The phrase sift through in paragraph 4 is closest in meaning to
国家公务员工资保险福利制度是留住人才保障机制。（ ）
国家公务员工资保险福利制度是留住人才保障机制。（ ）