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Advertisers tend to think big and perhaps this is why they're always coming in for criticism．
Their critics seem to resent them because they have a flair for self-promotion and because they have so much money to throw around． "It's iniquitous," they say, "that this entirely unproductive industry (if we can call it that) should absorb millions of pounds each year． It only goes to show how much profit the big companies are making． Why don't they stop advertising and reduce the price of their goods? After all, it's the consumer who pays ．．．"
The poor old consumer! He'd have to pay a great deal more if advertising didn't create mass markets for products． It is precisely because of the heavy advertising that consumer goods are so cheap． But we get the wrong idea if we think the only purpose of advertising is to sell goods． Another equally important function is to inform． A great deal of the knowledge we have about household goods derives largely from the advertisements we read．
Advertisements introduce us to new products or remind us of the existence of ones we already know about． Supposing you wanted to buy a washing machine, it is more than likely you would obtain details regarding performance, price, etc, from an advertisement．
Lots of people pretend that they never read advertisements, but this claim may be seriously doubted． It is hardly possible not to read advertisements these days． And what fun they often are,too!Just think what a railway station or a newspaper would be like without advertisements． Would you enjoy gazing at a blank wall or reading railway by-laws while waiting for a train? Would you like to read only closely printed columns of news in your daily paper?A cheerful, witty advertisement makes such a difference to a drab wall or a newspaper full of the daily ration of calamities． We must not forget, either, that advertising makes a positive contribution to our
pockets． Newspapers, commercial radio and television compan
整篇文章都在介绍广告对社会服务的有用性，故选C。
《义务教育数学课程标准（2011年版）》强调，课程内容要反映社会的需要、数学的特点，要符合学生的认知规律。课程内容的组织要重视过程，处理好（）的关系。
设α是某一方程组的解向量，k为某一常数，则kα也为该方程组的解向量。（ ）
案例：
在有理数运算的课堂教学片段中，某学生的板演如下：
针对该学生的解答，教师进行了如下教学：
师：请仔细检查你的演算过程，看是否正确无误？
生：好像正确吧。
请分析例题1、例题2中每一步运算的依据。（10分）
初中数学课程是一门国家课程，其主要内容包括课程目标、教学内容、教学过程和( )等
教师职业道德区别于其他职业道德的显著标志就是（ ）。
对高中数学的评价，下列说法错误的是( )。
