患者，男，20岁，失恋后精神抑郁。近几天出现性情急躁，精神亢奋，常无缘两目怒视，骂詈

关于223×32和32×223，下列说法正确的是（　　）

A．意义相同，积不等

B．意义不同，积不等

C．读法不同，积相等

D．以上说法都不对

日经500种股价指数( )。

A．以东京证券所第一市场上市的225种股票为样本

B．样本原则上固定不变

C．成为反映和分析日本股票市场价格长期变动趋势最常用的指标

D．能如实反映日本产业结构变化和市场变化情况

ETF是( )的简称。

A．存托凭证

B．交易所交易基金

C．上节开放式基金

D．指数参与份额

阅读理解。

     Today anyone will accept money in exchange for goods and services. People use money to buy food,

furniture, books, bicycles and hundreds of other things they need or want. When they work, they usually get

paid in money.

     Most of the money today is made of metal or paper. But people used to use all kinds of things as money.

One of the first kinds of money was shells.

     Shells were not the only things used as money. In China, cloth and knives were used. In the Phillipine

Islands, rice was used as money for a long time. Elephant tusks, monkey tails and salt were used as money in

parts of Africa.

     The first metal coins were made in China. They were round and had a square hole in the centre. People

strung (串联) them together and carried them from place to place.

     Different countries have used different metals and designs for their money. The first coins in England

were made of tin (锡). Sweden and Russia used copper (铜) to make their money. Later some countries began

to make coins of gold and silver.

     But even gold and silver were inconvenient if you had to buy something expensive. Again the Chinese

thought of a way to improve money. They began to use paper money. The first paper money looked more like

note from one person to another than the paper money used today.

     Money has had an interesting history from the days of shell money until today.

1. In the Philippines Islands _____ was once used as money.

A. rice

B. knife

C. cloth

D. wheat

2. What was the first used as money? 

A. Elephants tusks

B. Cloth

C. Salt

D. Shells

3. The first metal coins looked like _____.

A. square-shaped with some designs on them

B. square-shaped with a round hole in the center

C. round-shaped with a square hole in the middle

D. round-shaped with a round hole in the middle

4. The first paper money ______.

A. was passed from west Asia to China

B. looked like a note used today

C. was first used in Europe

D. looked like a piece of fur

5. We can infer from the passage that _____.

A. paper money isn't difficult to make

B. money must be suited to carry

C. people need money to exchange goods with each other

D. people prefer metal coins to paper notes

制动灯的开关与（）同步，只要车轮制动器动作时，制动灯即发亮。

A.前轮制动器

B.后轮制动器

C.手制动器

D.前、后轮制动器