51.
Suppose you are driving your friend to the airport and
the car radio is on, what can't you hear if you wear a headphone?
A.The radio music and the car engine noise.
B.The noise of the planes passing overhead and what your
friend says.
C.The radio music and what your friend says.
D.The nose of the car and the planes passing overhead.

D
If
you 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 steal 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 of the world’s most
expensive cities. But both have fallen since last year’s study - New York came in 15th, down from 10th
place, while Los Angeles
fell to 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.