题目内容
A．When the glasses are 25% full.B．When the glasses are empty.C．Before you make a toast
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听力原文： The great advance in rocket theory 40 years ago showed that liquid-fuel rockets were far superior in every respect to the skyrocket with its weak solid fuel, the only kind of rocket then known. However, during the last decade, large solid-fuel rockets with solid fuels about as powerful as liquid fuels have made their appearance, and it is a favorite layman's question to inquire which one is "better". The question is meaningless; one might as well as ask whether a gasoline or a diesel engine is "better". It all depends on the purpose. A liquid-fuel rocket is complicated, but has the advantage that it can be controlled beautifully. The burning of the rocket engine can be stopped completely; it can be reignited when desired. A solid-fuel rocket, on the other hand, is rather simple in construction, though hard, to build when a really large size is desired. But once you have a solid-fuel rocket, it is ready for action at a very short notice. A liquid-fuel rocket has to be fueled first and can not be held in readiness if or very long after it has been fueled. However, once a solid-fuel rocket has been ignited, it will keep burning. It can't be stopped and reignited whenever desired. Because a solid-fuel rocket can be kept ready for a long time, most military missiles employ solid fuels, but manned space flight needs the fine adjustments that can only be provided by liquid-fuel rocket. It may be added that a liquid-fuel rocket is an expensive device; a large solid-fund rocket is, by comparison, cheap.
(33)
A．Because they are too mean to treat others.B．Because they are too reserved to express
Section B
Directions: In this section, you will hear 3 short passages. At the end of each passage, you will hear some questions. Both the passage and the questions will be spoken only once. After you hear a question, you must choose the best answer from the four choices marked A, B, C and D.
听力原文： Isaac Singer was an inventor. Life is easy because of his invention. His story begins in 1811. He is born poor. He is the eighth child of a German immigrant. At age 22, he runs away from home and become an actor. An actor does not make much money, so Isaac also learns to be a mechanic. When he needs money, he works as a mechanic.
Now it is 1851. Singer is working as a mechanic in Boston. Someone tells him he can make a lot of money if he can make a good sewing machine. Singer needs money. There are already several kinds of sewing machines. But none of them work well. In eleven days, Singer makes the first sewing machine that really works.
Singer and two other people stag the I. M. Singer Company. They make sewing machines. Soon everyone wants to buy one. The singer Company uses a great new idea to sell its machines. People do not have to pay all the money at one time. They can pay a little money every month or every week.
The sewing machine changes life in the United States. Woman do not have to sew clothes for the family. For the first time, people can buy ready-made clothes and shoes.
Isaac Singer became a very, very wealthy man. He stops work and retires. He builds a house with 115 rooms in England. When he dies, his 24 children fight over his money.
(27)
A．He led an extravagant life in his later years.B．He still worked hard when he became
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