people were watching the sky, the alien got out of the UFO. A．If B．When C．Because D．While 题目和参考答案——青夏教育精英家教网—

题目内容

_________ people were watching the sky, the alien got out of the UFO.

A．If

B．When

C．Because

D．While

【答案】

【解析】while引导的时间状语从句常用进行时态.

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　　People use money to buy food, books, bicycles and hundreds of other things they need．When they work, they usually get paid in money．

　　Most of the money used today is made of metal or paper．But in ancient(古代的)time people often used all kinds of things as money．One of the first kinds of money was shells(贝壳)．

　　In China, cloth and knives were used as money．Elephant tusks(象牙), monkey tails and salt were used in some parts of Africa．Rice was also a kind of money used by the ancient people in some islands．Cows and other animals were used as money, too．

　　The first copper coins were made in China．They were round and had a square hole in the centre．Different countries had used different metals for their money．later some countries began to make coins of gold and silver．But gold and silver were heavy to carry when people need a lot of coins to buy something expensive．The Chinese wer the first to use paper money．The first paper money looked mote like a note from one paper to another than the paper money used today．

(1)

We use ________ as money today．
[　　]
A．	paper
B．	shells
C．	gold and silver
D．	copper coins

(2)

People gave up gold and silver coins because ________．
[　　]
A．	they were too heavy
B．	they would be for future use
C．	they were easy to slip off(滑倒)
D．	they were useless

(3)

________ first used paper money．
[　　]
A．	India
B．	America
C．	France
D．	China

(4)

African people used ________ as money in ancient time．
[　　]
A．	clothes and knives
B．	cows and other animals
C．	copper coins
D．	tusks, monkey tails and salt

(5)

The best title for this passage is ________．
[　　]
A．	Paper Can Be Used as Money
B．	African Money Forms
C．	The History of Money
D．	Money in Ancient Time

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