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17．An American company has developed a car powered by electricity that travels at high speed like cars powered by traditional fuels．Company officials say the car is experimental and will not be sold to the public for a long while．Yet some experts have called the vehicle（交通工具） an important step toward the production of pollution-free automobiles （汽車）．The new car，called the Impact，was made by the General Motors company．Engineers say the Impact uses technology developed for the car that won the first international race for vehicles powered by sunlight．The Impact creat es no air pollution because its power comes from a large battery（電瓶）．It can travel at a speed of 88 kilometers an hour．Then the battery must be refueled with more electricity．The battery can be refueled in a few hours with electric current （電流） from a person's house．It must be replaced completely every two years．The Impact has two motors．Each powers one of the front wheels．Reports say the car makes almost no noise at low speed．It makes a small noise as it goes faster．The Impact has a top speed of 160 kilometers an hour and it can go from zero to 96 kilometers an hour in eight seconds．That is faster than most gas-powered cars．
The head of General Motors，Roger Smith，has not said how much the Impact might cost，but he says it would have to be competitive with other car prices．Mr Smith also says a few problems still remain．For example，the cost of operating the Impact today would be about twice that of other cars．Reports say the new electric car has raised hopes among environmental officials，especially in California．American car makers are hurrying to meet new air pollution laws in that state．General Motors says California would be the main market for the Impact．But the company says it would not produce the car at all unless people all over the United States wanted to buy it．Some company officials say the car could be in production within five years．

28．The highest speed the Impact can reach isCkilometers an hour．
A.88  B.96  C.160  D.190
29．The power of the new car comes fromD．
A．wind    B．sunlight      C．gas    D．battery
30．Bwould welcome this new product．
A．People who like motor races            B．Environmental officials
C．Managers of filling stations           D．Workers of General Motors
31．Which of the statements below is NOT true about the Impact？C
A．It is not powered by traditional fuels．
B．It uses technology that is developed for another type of pollution-free car．
C．It has a motor that can power four wheels at the same time．
D．It has not been put in practical production．

分析 本文講述了一種新型的汽車，它是以電力為驅動力的，時速快并且無污染．

解答 28．C．細節(jié)理解題．由第一段最后一句The Impact has a top speed of 160 kilometers an hour 可知，Impact 的最高時速是160千米每小時，故選C．
29．D．細節(jié)理解題．由第一段第一句An American company has developed a car powered by electricity that travels at high speed，可知新生產的汽車是以電力為動力的，故選D．
30．B．理解推斷題．由第二段Reports say the new electric car has raised hopes among environmental officials，可知環(huán)保官員將會歡迎這個新產品，故選B．
31．C．理解判斷題．由第一段The Impact has two motors，這個車有兩個發(fā)動機，可知C選項錯誤，故選C．

點評 這篇文章非常簡單，先看問題，再帶著問題仔細閱讀短文，理解了全文內容，很容易選出正確答案．閱讀注意事項：1、關注連詞，分析文章邏輯結構．2、聚焦代詞，明辨指代關系．3、抓住關鍵詞語，利用平行結構、上下文（包括定義、釋義、舉例、對比、標點）進行判斷與推理．4、了解一些構詞法，從詞根的特殊含義入手．

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