Questions 8 to l0 are based on the following news from the VOA. At the end of the news item, you will be given 10 seconds to answer each question. Now listen to the news. If the problem is not fixed, ______.

单项选择题Why should governments ensure tire careful handling and recycling of the CFCs now in use

单项选择题In a true sense, plateways are the earliest and most primitive railways invented by ______.

单项选择题In the next decade, Robots will become practical because of all but one exception that ______.

单项选择题What does the man warn the woman not to do

单项选择题According to the author,______ is the most important function of institutions of higher education.