单项选择题
A survey has shown that people have stopped believing both the media and politicians.A similar survey carried out 5years ago showed that 50%of people thought that whatpoliticians said was usually not true,and that 35%of people thought that what they saw on the television or read in newspapers was not true.Now both those figures have increased sharply,t080%of people not believing politicians and 70%not believing the television or newspapers.Experts think that these figures are not going to come down in the near future.Stories about politicians and journalists taking money from businessmen have caused the public to stop trusting them.Also politicians keep making promises that they do not keep.Mr Smith of York said,‘When the politicians make new laws,they only help their friends,not people like me.Mrs Marley of Leeds said,‘The newspapers and television are not interested in what is true;they are only interested in money for advertising’.It has got worse recently as more people can get news from the Internet and learn if the journalists and politicians are.telling the truth or not.What can our politicians and journalists do?The only answer is to be more honest
Stories say businessmen give money to().
A.politiciansB.politicians and journalistsC.journalists
单项选择题 Experts think this problem()
问答题 你能说totwrk ,educ 和age解释了sleep的大部分变异吗?还有什么其他因素可能影响花在睡眠上的时间?它们与totwrk可能相关吗?
问答题 讨论educ的估计系数的符号和大小。