单项选择题

A. He is an excellent carpenter.
B. He said the right thing.
C. He is a violent person.
D. He prefers to work only with his head.
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单项选择题
A. By a temperature controller in our brains.B. By blood vessels constricting and dilating. C. By the amount of blood passing it. D. All of the above.
A. By a temperature controller in our brains.B. By blood vessels constricting and dilating.
C. By the amount of blood passing it. D. All of the above.
填空题
Human beings are never satisfied. They have always wanted things to be easier, faster, more comfortable or more (36) . Human history is the history of inventions. Various as they are, inventions (37) heavily in the progress of society and mankind. They serve as a ladder for (38) as well as for the evolution of man. An invention is something totally (39) , something that nobody else has thought of. It may be something (40) , like a new machine, or it may be a new way of doing something, like the (41) of production methods in a factory. The earliest inventions, like boats and weapons, were simple but effective ways of meeting basic need and were developed (42) by people in different parts of the world who needed to travel or to hunt. Modern inventions are more technical and more (43) . If you come up with a totally new idea, the first thing to do is to register your invention at the Patent Office. (44) . Early this century, someone suggested that the Patent Office could be closed because everything had already been invented! (45) . However, it seems that we are inventing more technology than we need. (46) . Nevertheless, the flow of inventions continues.
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