’Cold－blooded’ mens tht the core temperture remins close to the ______ temperture ’s’Cold-blooded’ mens tht the core temperture remins close to the ______ temperture ’s it risesnd flls.’micble B．mible C．mbient D．mbitious

A．be; should have B．was; have C．should be; have D．was; has

A．that B．what C．which D．how many

A．that B．which C．what D．it

A．indicate B．suggest C．mean D．imply

According to the speaker, A．there are more ways to ensure blood supply. B．more ways should be developed. C．new rules should be developed. D．more blood supply should be called for.

A．that so; so; such B．that so; such; such C．that such; so; so D．that such; so; such

A．can’t B．should C．mustn’t D．shall

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

Blood doping, in short, means withdrawal of one unit of a little more of blood from an athlete's system about four to six weeks before a competition. The blood is then stored in a frozen state while the body replenished the lost blood through natural processes. The extracted blood is unfrozen and then pumped back into the athlete's system just before the competition. This increases the body's hemoglobin count, hereby increasing the capacity for oxygen delivery and raising the level of endurance. A recent colloquium on the ethics of blood doping, summarized in The Physician and Sports Medicine, cited eases of runners getting blood transfusions so they could run fast enough to qualify for Boston Marathon and of blood doping in dog and horse racing. Blood doping may be surprisingly common among world-class endurance athletes, especially cyclists and runners. Blood doping is cheating and it is now banned by the International Olympic Committee, but it is still impossible to test, and till sure checks are found, one can only count on the personal ethics of the sportspersons concerned. Does blood doping really work？ Buick et al. and Williams et al. have made some studies in the laboratory. In one study, 11 highly trained male track athletes underwent extensive treadmill testing before and alter phlebotomy with re-infusion of 900mi of antilogous freeze-preserved red cells. The blood doping increased the mean hemoglobin concentration 8% (from 15.1% to 16.3% gnm/100ml) , maximal oxygen consumption 5% , and running time to exhaustion 35%. In another study, 12 experienced male distance runners who received 920ml of antilogous blood had a mean 7% increase in hemoglobin concentration and a mean 45-second improvement in time on a 5-mile treadmill run, compared with results after they received 920m1 saline. In the third study, 9 male college students who received two units antilogous blood had a significant increase in hemoglobin concentration and maximal oxygen consumption on a cycle ergo-meter. It is reasonable to conclude that blood doping does work when properly performed in the laboratory. But does it work in the field？ The problem in determining if blood doping works in the field is that almost all the reports are anecdotal. Whether it works or not, blood doping as it was done for the U.S. Olympic cyclists is to be condemned. Three of the cyclists developed flu-like symptoms 36 hours after transfusion, and one of them, when asked about blood doping, said, "Yeah, I did it. I got sick and it ruined me for the Olympics." To be sure, some of the cyclists who blood-doped won medals, but so did some who refused blood doping. Likewise, not all Olympians who admitted to blood doping were medal winners: an Italian runner who blood-doped for the marathon said he ran poorly and the national cross-country team alleged to have blood-doped ran poorly. In short, one cannot tell from anecdotal reports whether or not blood doping works in the field. Which of the following statements best expresses the main idea of the passage？ A．Blood doping does afford athletes a competitive advantage though it is not quite safe. B．Blood doping works in the laboratory, but there is no evidence to show it works in the field. C．Blood doping is becoming increasingly common in the world of sports. D．Athletes who Blood-dope for endurance can perform. better than others.

A．warm; cold B．coldly; hot C．hot; warm D．cold; warm

British surnames fall mainly into four broad categories: patronymic, occupational, descriptive and local. A few names, it is true, will remain puzzling: foreign names, perhaps, crudely translated, adapted or abbreviated; or artificial names. In fact, over fifty percent of genuine British surnames derive from place names of different kinds, and so they belong to the last of our four main categories. Even such a name as Simpson may belong to this last group, and not to the first, had the family once had its home in the ancient village of that name. Otherwise, Simpson means "the son of Simon", as might be expected. Hundreds of occupational surnames are at once familiar to us, or at least recognizable after a little thought: Arther, Carter, Fisher, Mason, Thatcher, Taylor, to name but a few. Hundreds of others are more obscure in their meanings and testify to the amazing specialization in medieval arts, crafts and functions. Such are "Day", (Old English for breadmaker) and "Walker" (a fuller whose job was to clean and thicken newly, made cloth). All these vocational names carry with them a certain gravity and dignity, which descriptive names often lack. Some, it is true, like "Long", "Short" or "Little", are simple. They may be taken quite literally. Others require more thinking: their meanings are slightly different from the modern ones. "Black" and. "White" implied dark and fair respectively. "Sharp" meant genuinely discerning, alert, acute rather than quick-witted or clever. Place-names have a lasting interest since there is hardly a town or village in all England that has not at some time given its name to a family. They may be picturesque, even poetical; or they may be pedestrian, even trivial. Among the commoner names which survive with relatively little change from old-English times are "Mil ton" (middle enclosure) and "Hilton" (enclosure on a hill). Surnames are said to be ______ in Anglo-Saxon England. A．common B．vocational C．unusual D．descriptive

A．that B．this C．it D．them

A．that B．what C．which D．Where