单选题He ______ interrupted me by asking many irrelevant questions. A. carelessly B. carefully C. continually D. consequently

单选题According to the passage, the rate of employment can be expected to rise when ______.

单选题After Man has dreamed about flying for a long time. Michael Moshier is a dreamer. He invented the Solo Trek. The Solo Trek had a 120 horsepower engine with twin fans. Only one person flies. As you fly above the roofs, you lean a little forward. You can see everything under you. You are flying like Superman. Michael Moshier looked at the jet belt and the rocket belt that was developed 20-30 years ago. Nothing ever came from them. People still can’t fly. Inventors have tried to make it easy for people to fly. Paul Moller has been working on his flying car for 30 years. He now says it is ready for tests. It would take off and land vertically, go 600 miles an hour, and deliver 20 miles to the gallon. A computer would do the actual flying. He says it could be sold next year for about a million dollars. NASA is working with Moshier to help develop his flying machine. The first users are likely to be military. It’s been 50-years since Robert Fulton invented his airphibian, a flying car. It flew, and is now in the Smithsonian Museum. Getting dreams to fly is never easy.

单选题Walrus ivory, which the Eskimos used for weapons and carvings, is now very scarce due to the slaughter of the animals.

单选题8. Usually a manufacturer doesn't deal directly with the people who use his products.

单选题Man: Penny's still going to Smith College, isn't she?Woman: No. I heard she transferred to Yale.Question: What do they say about Penny?

单选题They came to their rescue and convinced these trembling men ______ safety and help. A. of B. with C. for D. as

单选题Since you need to catch an early train tomorrow morning, we ______ now. A. might as well leave B. had better to leave C. ought to have leave D. should have to leave

单选题_____________ for the timely investment from the general public, our company would not be so thriving as it is. 

单选题 A very interesting and important development in science is a device called laser. A laser is a machine which produces a light beam. The light produced by a laser is a very special kind of light. The light, called laser beam, is powerful and can be made to do many things. The laser was first developed in 1960, about half a century ago. There are many different uses for lasers and several different types have been developed. Some use gases to produce the light beam. The gases are heated and cooled, and these processes cause the gases to produce energy in the form of light. One special point of lasers is that the light beam can be stored. If the stored light is then suddenly let go, it is extremely powerful. The light from a laser beam can be used either by storing it and letting it go suddenly, or by using it in a continuous stream. There are three important areas where the control of the laser beam has been put into use by scientists. These areas are industry, communications, and medicine. In each area, the scientists have been able to use the laser to do things that they could not do in another way. The laser has been very helpful. In industry, the laser beam has been used for measurement and drilling. When something large is being built—for example, a large bridge—it is important to have very accurate measurements. By accurate measurement, lasers are also helpful in laying down pipelines over long distances. As lasers become more common in industry, there will be more and more uses for them.

单选题The man was ______. ( )

单选题 Once we get these details in order

单选题If I may be so______as to advise you, my opinion is that you should not reply to his letter. A. generous B. humble C. proud D. bold

单选题We should take good care of our eyes ______.

单选题In spite of the ______ economic forecasts, manufacturing output has risen slightly. A. gloomy B. miserable C. shadowy D. obscure

单选题What effect can dim lights of an eating environment bring about? 

单选题If you've got a complaint, the best thing is to see the person concerned and ______with him. A. tell it B. have it out C. say it D. have it known

单选题If I ______ the exam, he would be astonished. A. did pass B. pass C. were to pass D. had passed

单选题Joe: We haven't got together for a long time. How about lunch next week?Nancy: I'm pretty tied up all next week. How about we plan on two weeks from today? ______.Joe: OK. Wednesday in two weeks.