题目内容：
Questions are based on the following passage． 
注意：此部分试题请在答题卡2上作答。
According to the passage，scholars and students are great travelers because______.
[A]salaries and conditions are better abroad
[B]standards are higher at foreign universities
[C]they are eager for new knowledge
[D]their governments encourage them to travel
参考答案：
答案解析：