27.There are signs that there is a growing tendency for people to turn away from ________ western medicine to alternative methods of treatment.
A.conventional B.pessimistic C.bureaucratic D.theoretical
26.Government should adopt laws that would ban advertising and other types of ________ of tobacco products.
A.delivery B.spread C.promotion D.discount
25.The managing director took the ________ for the accident, although it was not really his fault.
A.guilt B.response C.blame D.accusation
24.The former Olympic champion was ________ in the quarterfinals last night when he lost 0-2 at home.
A.knocked off B.knocked out C.knocked down D.knocked over
23.The workers agreed to ________ the strike if the company would satisfy their demands.
A.call for B.call in C.call off D.call up
22.These articles ________ the problems of the modern world, including race relations and community development.
A.address B.avoid C.create D.correct
第一节:单项选择(共10小题;每小题1分,满分10分)
从A、B、C、D四个选项中,选出可以填入空白处的最佳选项,并在答题卡上将该项涂黑。
21.Urban crowdedness would be greatly relieved if fares ________ on public transport were more reasonable.
A.offered B.spent C.paid D.charged
21.(本小题满分14分)(注意:在试题卷上作答无效)
设数列的前项和为,对一切,点都在函数 的图象上.
(Ⅰ)求及数列的通项公式;
(Ⅱ) 将数列依次按1项、2项、3项、4项循环地分为(),(,),(,,),(,,,);(),(,),(,,),(,,,);(),…,分别计算各个括号内各数之和,设由这些和按原来括号的前后顺序构成的数列为,求的值;
(Ⅲ)令(),求证:.