Sports and games make our bodies strong, prevent us from getting too fat, and keep us healthy. But these are not their only use. They give us valuable practice in making eyes, brain and muscles work together. In tennis, our eyes see the ball coming, judge its speed and direction and pass this information on to the brain. The brain then has to decide what to do, and to send its orders to the muscles of the arms, legs, and so on, so that the ball is met and hit back where it ought to go. All this must happen with very great speed, and only those who have had a lot of practice at tennis can carry out this complicated chain of events successfully. For those who work with their brains most of the day, the practice of such skills is especially useful.
Sports and games are also very useful for character-training. In their lessons at school, boys and girls may learn about such virtues as unselfishness, courage, discipline and love of one’s country; but what is learned in bo
A. what he does out of class
B. what he learns in books
C. his place in society
D. his lessons in school
Sports and games make our bodies strong, prevent us from getting too fat, and keep us healthy. But these are not their only use. They give us valuable practice in making eyes, brain and muscles work together. In tennis, our eyes see the ball coming, judge its speed and direction and pass this information on to the brain. The brain then has to decide what to do, and to send its orders to the muscles of the arms, legs, and so on, so that the ball is met and hit back where it ought to go. All this must happen with very great speed, and only those who have had a lot of practice at tennis can carry out this complicated chain of events successfully. For those who work with their brains most of the day, the practice of such skills is especially useful.
Sports and games are also very useful for character-training. In their lessons at school, boys and girls may learn about such virtues as unselfishness, courage, discipline and love of one’s country; but what is learned in bo
A. use, first, our eyes, then the brain and finally the muscles
B. make our eyes, brain and muscles work almost at the same time
C. use mainly the arms and legs to hit
D. use mainly the muscles so that the ball is met and hit back
Will chips one day be planted in our bodies for identification
A US doctor has planted under his skin a computer chip (芯片) that can send personal information to a scanner(扫描仪) ,a technology that may someday be widely used as a way to identify (识别) people. The chip gives off information which will be scanned by a hand-held reader.
The chip is similar to that planted in more than 1 million dogs, cats and other pets in recent years to track and identify them.
The doctor decided to test the chip himself after the World Trade Center disaster(灾难). The dead could have been identified if their names and other important information had been chipped.
Officials of the company said they hope to sell the chips to patients with man-made arms or legs or other body parts. The idea is that the chip will provide immediate and correct medical information when it is needed.
The information can contain name, telephone number and other informat
A. catch escaped prisoners
B. find missing children
C. follow lost animals
D. treat sick people
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