Every argument has more than one premise.

A . Projectphase B . Unique C . Temporary D . Closure

A . cheap B . economic C . economical D . saving

A、focused B、focuse C、focusing D、foucusion

A．lower cost B．higher performance C．sustained productivity D．Nil of the above

听力原文： In America, self-improvement is a national pastime. Every year, more and more Americans spend their leisure time trying to improve themselves one way or another. One popular form. of self-improvement is the search for physical fitness. Thousands of Americans who never exercised are now out on the streets jogging in fashionable running suits and expensive gym shoes. They boast of how many miles they nm each day and of how many pounds they lose each week. Others are turning to swimming, tennis, dance and the martial arts to improve their physical fitness. Instead of running around the park in the morning or evening, other Americans are studying yoga or meditating quietly in their homes. They are seeking to improve themselves by finding peace and quiet. Adult education is another form. of self-improvement. After a hard day's work, many Americans take evening courses at a kraal high school or a community college. There they can study a variety of subjects. Often these people am preparing to return to the job market or trying to qualify themselves for better jobs. For example, a mother busy raising her children might attend a night school to learn secretarial skills. A secretary might return to study accounting. Some retired people may go back for the education they missed at an earlier age. (30) A．Entertainment. B．Studying in a local college. C．Seeking physical fitness. D．Finding peace and quiet.

A．since B．until C．for D．before

A．A.qualified B．B.obtain C．C.reasonable D．D.buried

A．explicit B．implicit C．conspicuous D．distinctive

A．productivity B．possibility C．responsibility D．necessity

2. Yet the implication that rapid change is a new phenomenon is again misleading. If you measure the time it takes for a technology to become widely diffused, today's experience does not seem unusual. Take the car. The basic patent for an internal-combustion engine capable of powering a car was fried in 1877. By the late 1920s—50 years later—over half of all American households owned a car. 3. The comparable dates for the computer axe harder to tie down, but the first big computer, based on vacuum valves, was built in 1946. The transistor—the first semiconductor device—was invented at Bell Laboratories in 1948. The first patent for an integrated circuit was filed in 1959. Now, in 1999-50 years after the first one was built—around half of American households own a computer. The pace of introduction has been similar to that of the car. 4. You have to cheat, choosing only the date for the personal computer, say(mid-1970s), or the internet (ditto) to make it seem much more rapid. Comparing its diffusion among private users is, you might say, unfair to the computer, for that machine's main use is in businesses. On that measure, the best historical analogy is with electrification, and the spread of the electric dynamo into factories. 5. According to Paul David, a historian at Stanford University in California, the first electricity-generating stations had been installed in New York and London in 1881, but it was well into the 1920s before the dynamo became widely used and started to raise productivity. The adoption of the computer in business has also been slow, and failed to have any measurable impact on productivity until very recently.

A．since B．when C．before D．after

For every course that he follows a student is given a grade, which is recorded, and the record is available for the student to show to prospective employers.

对 错

A.to write B.written C.wrote D.write

A．Every chicken is born from a chicken egg that has already been laiD． B．Every chicken egg is laid by a chicken who has already been born． C．If there are any chickens today, there must have been infinitely many generations of chickens before today． D．all of the above E．A and B,but not C