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Scientists in the 1950s proclaimed the robot the brainwave (灵感，灵机) of the future—it would free housewives of drudgery (单调沉闷的工作) and fill factories with tireless work force. But in many ways, the brainwave has been a washout. Robots can paint cars, salvage (收集) nuclear fuel and even assist in brain surgery, but theyre still pretty dumb. Mr. Reddy says robots are dumb 'because we havent taken the trouble to put the pieces together, not because we dont know how. That takes money and time and effort, and we dont have the money'. But today robots can recognize forms and shapes and measure distances. They can hear and speak by using computers that recognize thousands of words. Their sensors can detect smoke or fumes. They can move about rolling on wheels or walk with as many as eight legs like a spider on uneven terrain (地面,地带). In addition, they can recognize texture and the force of a movement, such as pressing. Many robots have one or two of these abilities to some degree, but creating a competent robot that combines most or all of them has been difficult. Scientists have also found it difficult to match human abilities that most people take for granted such as the fingers dexterity (灵巧,熟练) or the ability to identify objects. 'The list of things that robots can do better than humans is much shorter than the list of things robots cannot,' says Tom Smith from the Cambridge Mellon Institute.
Which of the following best expresses the ideas of the passage?
A．Robots still have a long way to go.
B．What can robots do today.
C．How to improve the abilities of robots.
D．Difficulties in creating a competent robot.

A.
Which
B.Robots
C.
B．What
D.
C．How
E.
D．Difficulties
F.

【参考答案】

A
本题问文章的中心思想是什么。通读全文，我们可以推断出作者虽然介绍了机器人的许多作用和能力，但是作者也指出机器......

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Benjamin Franklin was Americas first internationally famous swimmer and swimmer teacher. As a boy Franklin lived in Boston, on the coast of the Atlantic Ocean. There, during the warm summers he learned to swim. In 1717, at the age of 11, he tried out an early invention, which may well have been the first swim fins (鱼鳍) [such as scuba (自携式水中呼吸器) divers use today]. He made the fins by fitting a kind of web-shaped wooden sandal to the soles of his feet. He soon realized, however, that his swimming kick was linked to the inside of his foot and ankle as well as to the sole. As it turned out, Franklins 'flippers' were one of his least successful inventions. Franklin was always interested in getting the fullest enjoyment from life. While flying a kite one day he had another idea. Wanting to amuse himself with the kite and still swim, he lay on his back, held the kites stick in his hands and was carried along the surface of the water. (Although he often swam in Boston Harbor afterwards, Ben never again tried this method of travel. This was a pity, for if he had worn those wooden sandals while being pulled along by the kite, he might have become the worlds first water-skier. ) Franklin continued to be a powerful swimmer, and once, during a long stay in London, he swam more than three miles down the Thames River. Not content with enjoying the sport, he studied manuals on swimming strokes and taught himself to do stunts (绝技、惊险动作) in the water. He even considered opening a swimming school in London, but instead returned to Philadelphia and other pursuits. When he founded the University of Pennsylvania in 1740, he introduced the first compulsory college swim program. Franklins support for swimming may have come from his belief that even ones leisure should be employed usefully. The overweight Franklin considered swimming a reducer of fatty tissue. His accomplishments in this sport were recognized in 1969, when he, along with 14 Olympic swimming champion, was introduced into the newly established 'Swimming Hall of Fame' at Fort Lauderdale, Florida.Which of the following is the best title for this passage?A．Franklin, the Famous Swimming Teacher.B．Franklin, the Great Inventor.C．Franklin, the Founder of Swimming Schools.D．Franklin, the Well-known Swimmer.

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