数据处理的最小单位是______。A．数据 B．数据元素 C．数据项 D．数据结构

阅读理解

     If your boss asks you to work in Moscow this year, he'd better offer you more money to do so-or

even double that depending on where you live now. That's because Moscow has just been found to be

the world's most expensive city for the second year in a row by Mercer Human Resources Consulting.

     Using the cost of living in New York as a base, Mercer determined Moscow is 34. 4 percent more

expensive including the cost of housing, transportation , food , clothing, household  goods  and

entertainment (娱乐) .

     A two-bedroom flat in Moscow now costs $4,000 a month;a CD  $24. 83, and an international

newspaper  $6. 30, according to Mercer. By comparison,a fast food meal with a hamburger(汉堡包)is

a stea at $ 4. 80.

     London takes the No. 2 place , up from No. 5  a year ago, thanks to higher cost of housing and a

stronger British pound relative to the dollar. Mercer estimates (估算)  London is 26 percent more

expensive than New York these days. Following London closely are Seoul and Tokyo , both of which

are 22  percent more  expensive  than New York ,while No. 5  Hong Kong is 19 percent more costly.

     Among North American cities, New York and Los Angeles are the most expensive and are the only

two listed in the top 50 0f the world's most expensive cities. But both have fallen since last year's

study-New York came in 15th, down from lOth place, while Los Angeles fell t0 42nd from 29th place

a year ago. San Francisco came in a distant third at No. 54, down 20 places from a year earlier.

     Toronto , meanwhile ,is Canada's most expensive city but fell 35 places to take 82nd place worldwide. In Australia, Sydney is the priciest place to live in and No. 21 worldwide.

1. What do the underlined words "a steal" in Paragraph 3 mean?_________

A. An act of stealing.          

B. Something delicious.

C. Something very cheap.      

D. An act of buying.

2. London has become the second most expensive city because of_________.   

A. the high cost of clothing

B. the stronger pound against the dollar

C. its expensive transportation

D. the high prices of fast food meals

3. Which city is the third most expensive on the list?_________

A. Tokyo.    

B. Hong Kong.    

C. Moscow.    

D. Sydney.

4. Which city has dropped most on the list in North America?_________

A. New York.                  

B. Los Angeles.

C. San Francisco.                

D. Toronto.

“自由心证制度”的主要内容是什么？怎样评价它？

使生物碱碱性增大的基团有

A．醚基
B．羰基
C．苯基
D．烷基
E．酯基

轴向推力的危害是什么？

危险货物押运管理工作实行区段签认负责制。货检员须与押运员在（）签认。

A.货检员值班室

B.所押运的车辆前

C.运转室

D.车站指定地点