[单项选择]The cost of the air fare is higher than ______
A. the rail fare
B. that of the rail fare
C. those of the rail fare
D. which of the rail fare

[单项选择]The cost of the air fare is higher than ______
A. the rail fare
B. that of the rail fare
C. those of the rail fare
D. which of the rail fare

[单项选择]School students paying a lower fare than adults on the MTR trains, or cheaper tickets to the theatre, is an example of: （　）
A. The suppliers making less profit because some customers pay a lower price.
B. Consumers obtaining more consumer surplus.
C. Price discrimination allowing the suppliers to make more profit from charging a higher price to
D. Price discrimination allowing the suppliers to make more profit from charging a lower price to customers whose demand is more elastic.

[单项选择]The actual cost of the house was higher than their original ______.
A. consideration
B. plan
C. judgment
D. estimate

[单项选择]Why will battery buses cost less than conventional buses in the long run


A. They will spread the capital cost over a long period.
B. They will be stronger and last longer.
C. They will use less fuel and cost less to maintain.
D. They will be charged at night when electricity costs less.

[单项选择]This year fee will probably cost more than it did last year（）
A. 今年学费很可能比去年高。
B. 今年学费也许比去年高。
C. 去年学费很可能比今年高。
D. 今年学费肯定比去年高得多。

[单项选择]The cost of his car is higher than______of mine.
A. it
B. cost
C. any
D. that

[单项选择]

Crime is significantly higher in the US than anywhere else in the developed world. Thanks to the political power of the National Rifle Association, Americans have access to deadly weapons, and use them, to a degree that astonishes observers abroad. Americans possess an estimated 60 million hand-guns. Since 1960 the rate of murder crime per capita has grown by 35 percent, a truly horrible statistic. Violent death rates per capita are four or five times higher than in Western Europe (while rape rates are seven times higher, and forcible robbery rates some four to ten times higher). Experts suggest that this violence has cultural roots, and cannot simply be linked to poverty. New York’s murder rate is far larger than that in the slums of Calcutta, for example, and in prosperous Seattle --recently rated the number one city in the United States for "live ability" the murder rate is seven times of Birmingham, England. Nor is violence owing to lack of police efforts and
A. The U. S. is a decentralized, libertarian society.
B. The U.S. is a rich country.
C. Middle--class Americans traditionally dislike paying taxes.
D. The poor in the U.S. have little political influence.