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A．Because they were made of the precious metal gold and hence very valuable.
B．Because they could be used to exchange commodities and were called commodity money.
C．Because the value of a coin was the same as the value of the gold in the coin.
D．Because the value of the gold contained in a coin was more than the value of the coin.
A. the misunderstanding of science
B. the scientific explanation
C. the money needed in scientific research
D. the curiosity of scientists and nonscientists
A．money that are used in France B．to
write your name
C．a
flat metal used as money
A、Virginia House
B、University of Virginia
C、Monticello
D、Statehouse of Virginia
What do we know about "Spanish Silver Dollars"？
A．Today one coin equals to 49 dollars in the world market.
B．They were widely used in America after the Civil War.
C．Issued in small amounts, not many of them survive.
D．They were officially accepted in the 13 colonies.
Which statement is TRUE according to the passage？
A．China was the first country to use coins in the history of human being.
B．The coins were used in China more widely than European countries.
C．All the Chinese coins, though different in shape, had the pierced hole.
D．Bronze was the only ideal material used to make coins in the early time.
Special editions of the 4 collectible coins______.
A．are made of copper and sitver
B．sell at a price same as their face value
C．are likely to be used for circulation in the future
D．have different metal content from the one—dollar coin
A．sum of coin, currency, and balances in checking accounts．
B．amount of money expressed in terms of the quantity of goods and services it can purchase
C．number of dollars used as a medium of exchange
D．quantity of money created by the Federal Reserv
E．
A．every coin has two sides
B．everything is evolutionary
C．scientific findings might be contradictory
D．science is culturally defined
Section B
Directions: There are 2 passages in this section. Each passage is followed by some questions or unfinished statements. For each of them there are four choices marked A, B, C and D. You should decide on the best choice.
A few minutes ago, walking back from lunch, I started to cross the street when I heard the sound of a coin dropping. It wasn't much but, as I turned, my eyes caught the heads of several other people turning too. A woman had dropped what appeared to be a dime.
The tinkling sound of a coin dropping on pavement is an attention-getter. It can be nothing more than a penny. Whatever the coin is, no one ignores the sound of it. It got me thinking about sounds again.
We are besieged (包围) by so many sounds that attract the most attention. People in New York City seldom turn to look when a fire engine, a police car or an ambulance comes screaming along the street. When I'm in New York, I'm a New Yorker. I don't turn either. Like the natives, I hardly hear a siren (警报器) there.
At home in my little town in Connecticut, it's different. The distant wail of a police car, an emergency vehicle or a fire siren brings me to my feet if I'm seated and brings me to the window if I'm in bed.
It's the quietest sounds that have most effect on us, not the loudest. In the middle of the night, I can hear a dripping tap a hundred yards away through three closed doors. I've been hearing little creaking noises and sounds which my imagination turns into footsteps in the middle of the night for twenty-five years in our house. How come I never hear those sounds in the daytime.'？
I'm quite clear in my mind what the good sounds are and what the bad sounds are. I've turned against whistling, for instance. I used to think of it as the mark of a happy worker but lately I've been associating the whistler with a nervous person making compulsive noises. The tapping, tapping, tapping of my typewriter as the keys hit the paper is a lovely sound to me. I often like the sound of what I write better than the looks of it.
The sound of a coin dropping makes people ______.
A．stop crossing the street
B．look at each other
C．pay attention to it
D．think of money
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