Section B this is a passage with ten blanks to word for each blank from a list of choices given in a word following the passage.Read the passage through carefully before making your choices.Each choice in the blank is identified by a letter Please mark the corresponding letter for each item.You may not use any of the words in the blank more than once. Even though the majority of Americans would find it had to imagine what life could be like without a car,some have begun to realize that the automobile is a mixed blessing Traffic accidents are increasing 41 and large cities are42 by too many automobiles.Worst of all,perhaps,is the air pollution caused by the internal-combustion engine.Every car engine burns hundreds of gallons of fuel each year and pumps gases into the air.These gases are one43 of the smog that hangs over large cities Some of these gases are44 and dangerous tohealth.especially for sm One answe the problem of air pollution is to build a car that does not pollute.That's 46 severa major automobile manufactures are trying to do.But building a clean car is easier said than done 47 progress has been slow.Another solution is to eliminate car fumes altogether by getting rid of the internal-combustion engine.Inventors are now working on tribine-powered cars.48 on cars powered by steam and electricity.49 most of us won't be driving cars run on batteriesor boiling water for a while A)Therefore B)source C)poisoned D)poisonous E)of F)to G)so far H)pratical D)as well as J)steadily K)that L)what M)troubled N)But Directions:There are 2 passages in this section.Each passage is followed by some questions or unfinished statements.Four each of them there are four choices marked A)B)C)and)Dye should decide on the best choice Passage One Until ow,scientists have made limited progress the basic structure of matter.Inan effo to get closer to the truth,scientists have designed what is called a super conducting super collider )When constructed.the collider will consist of an underground circular tunnel ten feet wide filled with vacuum pipes.huge magnets.and detection devices.The entire tunnel will be fifty-three miles in circumference (and will vary from fifteen and a halfmiles to seventeen miles in diameter. The collider works by accelerating ms of smash into each othe propo nearly the speed of light.The portions will be forced to smash into each other,producing new sub-atomic particles.These particles will be directed into steel detecting instruments,where data will be translated into electronic code.The signals will ultimately be analyzed by a computer to detect any new particles.In this way scientists hope to discover new clues to the origin of the universe The collider r ctually get off the ound because of the estimated price tag of $4.4 billion ever would take portion of the U.budget f scientific research and might well become obsolete before completion in a projected time frame of seven years.On the bright side,the collider would generate thousands of jobs in whichever community it was located 51.According to the passage,the collider will have A)a ten-feet-wide underground tunnelSection B Direction;In this section,there is a passage with ten blanks.You are required to select one word for each blank from a list of choices given in a word following the passage.Read the passage through carefully before making your choices.Each choice in the blank is identified by a letter.Please mark the corresponding letter for each item.You may not use any of the words in the blank more than once. Even though the majority of Americans would find it hard to imagine what life could be like without a car,some have begun to realize that the automobile is a mixed blessing.Traffic accidents are increasing 41_and large cities are42__by too many automobiles.Worst of all,perhaps,is the air pollution caused by the internal-combustion engine.Every car engine burns hundreds of gallons of fuel each year and pumps gases into the air.These gases are one43__of the smog that hangs over large cities.Some of these gases are44__and dangerous to health,especially for someone with a weak heart or a respiratory disease. One answer45__the problem of air pollution is to build a car that does not pollute.That's 46__several major automobile manufactures are trying to do. But building a clean car is easier said than done.47__,progress has been slow.Another solution is to eliminate car fumes altogether by getting rid of the internal-combustion engine.Inventors are now working on tribine-powered cars,48__on cars powered by steam and electricity.49__most of us won't be driving cars run on batteries or boiling water for a while yet.Many auto makers believe that it will take years to develop 50__models that are powered by electricity or steam. A)Therefore B)source C)poisoned D)poisonous E)of F)to G)so far H)pratical I)as well as J)steadily K)that L)what M)troubled N) But` Section C Directions: There are 2 passages in this section. Each passage is followed by some questions or unfinished statements. Four each of them there are four choices marked A) B) C) and)Dye should decide on the best choice . Passage One Until now, scientists have made limited progress in uncovering the basic structure of matter. In an effort to get closer to the truth, scientists have designed what is called a super conducting super collider（对撞 机）.When constructed, the collider will consist of an underground circular tunnel ten feet wide filled with vacuum pipes, huge magnets, and detection devices. The entire tunnel will be fifty-three miles in circumference（圆周线）and will vary from fifteen and a half miles to seventeen miles in diameter. The collider works by accelerating beams of smash into each other, proportions in opposite directions at nearly the speed of light. The portions will be forced to smash into each other, producing new sub-atomic particles. These particles will be directed into steel detecting instruments, where data will be translated into electronic code .The signals will ultimately be analyzed by a computer to detect any new particles. In this way scientists hope to discover new clues to the origin of the universe. The collider may never actually get off the ground because of the estimated price tag of $4.4 billion, making it the costliest scientific instrument ever built. It would take up a large portion of the U.S. budget for scientific research and might well become obsolete before completion in a projected time frame of seven years. On the bright side, the collider would generate thousands of jobs in whichever community it was located. 51. According to the passage, the collider will have . A) a ten-feet-wide underground tunnel