未知题型 如果两个变量之间存在着负相关关系，则下列回归方程( )是肯定错误的。

未知题型 Are you thinking about trying out a political career but your【C1】______ are a little low for a presidential bid? You have until March 4th to gather 200 signatures to【C2】______ for a school board seat in one of the 32 Community School Board Districts within the New York City Public School System. Community school board members provide New York City【C3】______ with an opportunity to play a direct role in the governance of the city schools in their neighborhood, both by running for office and by【C4】______ in the elections. The board's most important responsibility is to select a superintendent to administer the【C5】______ schools. The school boards【C6】______ establish the educational policy of the district, promote the achievement of educational standards and objectives, approve changes in zoning patterns of schools, and evaluate the superintendent.School boards serve as【C7】______ between the community and the district's professional staff. Registered voters can run for a seat on the board of the school district【C8】______ they live, regardless of whether or not they have a child in a city public school.Parents or guardians who are not registered voters but【C9】______ are at least 18 years old and have children attending a community school board schools【C10】______ register as a 'parent voter' to both vote and run for a seat in the school district in which their child attends school or in the【C11】______ in which they live. All candidates must be New York City residents for at least 90 days【C12】______ to the elections and are required to submit a nominating petition with at least 200 valid signatures of people registered to vote and【C13】______ to vote in the school district in which the candidate is running. New York City Public School employees and people who hold any other elective【C14】______ or any elective or appointed party position are【C15】______ from serving as community school board members.【C16】______ petitions can be obtained weekdays from 9: 00 a.m. to 5: 00 p.m.【C17】______ the various borough offices of the New York City Board of Elections beginning January 26th. Signatures【C18】______ between January 26th and March 4th. Signed petitions must be filed【C19】______ between 9:00 a.m. March 1st and midnight March 4th only at the main office of the【C20】______ of Elections at 23 Broadway.【C1】A．fundsB．incomesC．financesD．resources

单项选择题 EHotlines have become common in China. Some radio broadcasting stations use hotlines to encourage the listeners to take part in the talk shows.That’s a good idea. Yet, the fact is, some people do nothing but break the whole programme.Some people know little about the topic under discussion. Sometimes they do not even know what the host (主持人) is talking about. So the host has to tell the caller what the show is about. Usually the caller will ask a few questions which express his hope and show his ignorance (无知).Then the host has to answer and explain-how silly this is! It wastes a lot of time.It seems that some people phone the hotlines in fun. They just want to let the listeners hear them. They don’t care what the topic is, whether they themselves are interested in or how silly they appear to be.I’m totally bored (厌烦) by those people. It’s necessary for radio stations to improve the hotline programmes. In my opinion, if a caller doesn’t know what is going on, the operator should not let the caller take part in it.第52题：The sentence, “Some people do nothing but break the whole programme.” may tell us that ________.[A] radio stations use hotlines in a wrong way[B] it is a fact[C] it is a good idea[D] some people have unclear thoughts