To separate the men from the boys means to separate the competent from those who are less competent.

A . precipitation number B . neutralization number C . pour point D . demulsibility

A、Denmark B、Belgium C、France D、Italy

A . The condenser and the expansion valve B . The king valve and the solenoid valve C . The compressor and the expansion valve D . The condenser and the solenoid valve

A . small an angle B . large an angle C . either small or large an angle D . neither small nor large an angle

A . acid B . sludge C . mechanical impurity D . salinity

A．one B．that C．it D．those

Fear is the driver's constant companion, and tragedy can be just a step behind.Scarcely a man in the 500 does not carry the scars of ancient crashes.The mark of the plastic surgeon is everywhere, and burned skin is common.Sometimes a driver's scars are invisible, part of his heritage.Two young drivers, Billy Vukovich and Gary Bettenhausen, raced in their first 500 in 1968.Less than 20 years before, their fathers also competed against one another on the Indy track-and died there.All this the drivers accept.Over the years, they have learned to trust their own techniques, reflexes, and courage.They depend, too, on a trusted servant-scientific engineering.Though they may not have had a great deal of schooling(an exception is New Zealand's Bruce McLaren, who has an engineering degree), many drivers are gifted mechanics, with a feeling for their engines that amount to kinship.A few top drivers have become extremely wealthy, with six-figure incomes from prize money, endorsements, and jobs with auto-product manufacturers.Some have businesses of their own.McLaren designs racing chassis(底盘).Dan Gurney's California factory manufactured the chassis of three of the first four ears in the 1968 Indy 500, including his own second place car.Yet money is not the only reason why men race cars.Perhaps it isn't even the major reason.Three-time Indy winner(1961,1964,1967)A.J.Foyt, for example, can frequently be found competing on dirty tracks in minor-league races, where money, crowds and safety features are limited, and only the danger is not.Why does he do it？ Sometimes Foyt answers, "It's in my blood." Other times he says, "It's good practice." Now and then he replies, "Don't ask dumb questions." 1.The statement "it is usually their nerves that go first" means ________. A.at first they all have a nervous look B.they often find they can't bear the tension even if they are in good condition C.someday they find they can't make responses to any risk D.they can continue their career at most until the middle 40s 2.It can be inferred that a car accident is often coupled with ________. A.a plastic surgeon B.a companion C.a risk D.a fire 3.The invisible scars of the drivers mentioned in the second paragraph refers to ________. A.the regrets left by their fathers B.the fears left by their fathers C.the cars left by their fathers D.the heritage left by their fathers 4.Bruce McLaren is different from most of the drivers in that ________. A.he himself designs chassis B.he has an engineering degree C.he manufactures chassis D.he is a gifted mechanic 5.A.J.Foyt often takes part in minor-league races for ________. A.prize money B.blood test C.cheers from the crowd D.Enjoyment

Magellan sailed from Seville in August 1519 with five ships and about 280 men. Fourteen months later, after spending the severe winter on the coast of Patagonia, he discovered the channel which is now called Magellan's Straits. In November 1520, after many months of dangers from rocks and storms, the three remaining ships entered the ocean on the other side of South America. They then continued, hoping to reach Asia. Before they arrived at these islands, later known as the Philippines, Magellan was killed in battle. The remaining officers then had to get back to Spain. They decided to sail around Africa. After many difficulties, one ship with eighteen men sailed into Seville three years after leaving. They were all that remained of Magellan's expedition. However, their achievement was great. They were the first men to sail round the world. The purpose of Magellan's expedition was ______. A．to become famous at that time B．to find navigation line from the Atlantic to the Pacific C．to make a voyage to Asia D．to carry men to the Seville

A．Nepal B．England C．China D．a country in Asia

Meanwhile, the much discussed trend for delaying marriage until later in life--blamed on career women reluctant to have children--may actually reflect a return to the historical norm. The average age of first marriage in Europe 200 years ago was 28, the same as British brides in 1998, according to a paper for the National Family and Parenting Institute, the independent thinktank set up by Jack Straw to advise on family issues. "The public conversation about marriage has often been conducted in an atmosphere fraught with anxiety that can easily tip over into what commentators have described as a moral panic," the report, comparing European trends in marriage, adds. "Changes in the marriage rate and in the way people form. relationships are part and parcel of a society where change is rapid and individuals feel helpless in the face of new developments; yet it is vital that these issues can be discussed without blame." The paper does not include divorce rates. In 1997 Britain had the highest divorce rate in Europe, although by 1999 the rate had fallen to the level of the late 1980s. Despite much political consternation about the family, the report suggests British attitudes are more socially conservative than those of many EU counterparts. Nine out of 10 couples in Britain living with their children are married, compared to half in Finland. And while cohabiting is becoming the norm for European twentysomethings, "change has happened much more rapidly across the whole of the EU than in the UK", the report finds. Around a third of British under-thirties live with a partner, but it is closer to half in France and 40 per cent in Germany. "This report is about let's bring a cool head to this debate," said Gill Keep, head of policy at the institute. "It is much easier to take the panic out of the discussion if you look at it in a comparative way; things that you think are destroying your own society are actually common trends and they may not be that destructive." She said that despite anxiety over later marriages--the average age of first-time brides rose from 23 in the postwar period to 28 for women and 30 for men by 1999--historically this would have seemed normal. Social historian Christina Hardyment said that in the nineteenth century couples would not marry until they could afford to support a household. "Women below the middle classes would always work in some capacity, mainly in domestic service, and it made sense to save; people think of kings and queens and nobility being married off at 12 but that was highly unusual," she said. It is a well-known fact that British women are unwilling to abandon single life for a marriage. A．True B．False

A．robbed her her necklace B．stole her her necklace C．robbed her necklace from her D．stole the necklace from her

The first real steps took place in France, in 1783.Two brothers, the Montgolfiers, made a very large “hot air balloon”.They knew that hot air rises.Why not fill a balloon with it？The balloon was made of cloth and paper.In September of that year，the King and Queen of France came to see the balloon.They watched it carry the very first air passengers into the sky.The passengers were a sheep and a chicken.We do not know how they felt about the trip.But we do know that the trip lasted eight minutes and that the animals landed safely.Two months later，two men did the same thing.They rose above Paris in a balloon of the same kind.Their trip lasted twenty-five minutes and they travelled about eight kilometers. 26.Leonardo da Vinci ______ . A.said that man would fly in the sky one day B.built a kind of machine which never flew C.drew many beautiful pictures of birds D.made designs for flying machine 27.Eight hundred years ago an Englishman ______ . A.made a kind of flying machine B.tried to fly with wings made of chicken feather C.wanted to build a kind of balloon D.tried to fly on a large bird 28.In fact，the Englishman who tried to fly ______ . A.lost his life B.flew only 8minutes C.got badly wounded D.succeeded in flying 29.The very first air passengers in the balloon were ______. A.two animals B.two Frenchmen C.the King and the Queen D.the Montgolfiers 30.When did two Frenchmen rise above Paris？______ A.In December 1783. B.In September 1783. C.In November 1783. D.In the seventeenth century.

A. for which B. for that C. in that D. in which