单选题What was the origin of the oil which now drives our motorcars and aircraft? Scientists are 21 about the 22 of coal, but they do not seem so 23 when asked about oil. They think that the oil 24 the surface of the earth originated in the 25 past, and was formed 26 living things in the sea. Countless billions of 27 sea creatures and plants lived and 28 to the sea bed. They were covered with huge 29 of mud; "and by 30 of chemistry, pressure and temperature were changed through long 31 into what we know as oil. For these creatures to become oil, it was necessary that they should be 32 between layers of rock for an enormous 33 of time. The 34 that oil originated in the sea is 35 by a glance at a map 36 the chief oil fields of the world; very 37 of them are far distant from the oceans of today. In some places gas and oil 38 to the surface of the sea from its bed. The rocks in which oil is found are 39 marine origin too. They are sedimentary rocks, rocks which were 40 by the action of water on the ocean.

单选题{{B}}Directions:{{/B}} There are 20 blanks in the following passage, for each blank there are four choices marked A, B, C, and D. You should choose the ONE that best fits into the passage and then mark the corresponding letter on the ANSWER SHEET with a single line through the center. The history of African-Americans during the past 400 years is traditionally narrated{{U}} (21) {{/U}}an ongoing straggle against{{U}} (22) {{/U}}and indifference on the part of the American mainstream, and a straggle{{U}} (23) {{/U}}as an upward movement is{{U}} (24) {{/U}}toward ever more justice and opportunity. Technology in and of{{U}} (25) {{/U}}is not at fault; it's much too simple to say that gunpowder or agricultural machinery or fiber optics{{U}} (26) {{/U}}been the enemy of an{{U}} (27) {{/U}}group of people. A certain machine is put{{U}} (28) {{/U}}work in a certain way-the purpose{{U}} (29) {{/U}}which it was designed. The people who design the machines are not intent on unleashing chaos; they are usually trying to{{U}} (30) {{/U}}a task more quickly, cleanly, or cheaply,{{U}} (31) {{/U}}the imperative of innovation and efficiency that has ruled Western civilization{{U}} (32) {{/U}}the Renaissance. Mastery of technology is second only{{U}} (33) {{/U}}money as the true measure of accomplishment in this country, and it is very likely that by{{U}} (34) {{/U}}this under-representation in the technological realm, and by not questioning and examining the folkways that have{{U}} (35) {{/U}}it, blacks are allowing{{U}} (36) {{/U}}to be kept out of the mainstream once again. This time, however, they will be{{U}} (37) {{/U}}from the greatest cash engine of the twenty-first century. Inner-city blacks in particular are in danger, and the beautiful suburbs{{U}} (38) {{/U}}ring the decay of Hartford, shed the past and learn to exist without contemplating or encountering the tragedy of the inner city. And blacks must change as well. The ways that{{U}} (39) {{/U}}their ancestors through captivity and coming to freedom have begun to loose their utility. If blacks{{U}} (40) {{/U}}to survive as full participants in this society, they have to understand what works now.

单选题From the text, we can see that the writer's overall attitude towards the issue seems to be ______.

单选题{{B}}C{{/B}} {{B}} HOW TO BOOK{{/B}} Book opens for Beckett Shorts on 8 September. {{U}}BY TELEPHONE{{/U}} For credit card (信用卡) bookings. Calls are answered. BOX OFFICE 01789 295623 9am - 8pm (Mon - Sat) 0541 541051 (24 hours, 7 days, no booking charge). {{U}}BY FAX{{/U}} For credit card bookings. Please allow at least 48 hours for reply, if required. BOX OFFICE 01789 261974 or 01862 387765 {{U}}BY POST{{/U}} Please enclose (附上) a check or credit card details together with an SAE or add 50p to the total amount (总额)to cover postage. Please send to the Box Office, RST, Stantford-upon-Avon, CV37 6BB. Booking opens for all other plays on 19 September. {{U}}IN PERSON{{/U}} BOX OFFICE RST hall, 9:30am - 8pm (Mon - Sat) (6 pm when theatres are closed.) {{U}}OVERSEAS BOOKING{{/U}} The easiest method of payment is by credit card. You can also pay by: Eurocheque (up to 500) with your card number written on the back. {{U}}PAYING FOR YOUR TICKETS CREDIT CARDS{{/U}} We accept Visa, Master Card, American Express and Diners Club. Please give the card number, name and address of card-holder. {{U}}CHEQUES{{/U}} Cheques and postal orders should be payable to: Royal Shakespeare Theatre.

单选题Some children are backward in speaking probably because ______.

单选题It can be inferred from the second paragraph that the consumers used to be put at a disadvantage in a large part due to

单选题______ H(h)onesty is ______ bedrock of any healthy relationship. A．A; an B．A; × C．×; the D．×; ×

单选题"Oh Captain! My Captain!" is Whitman"s mourning poem to______.

单选题What is new in NASA's plan to return to the moon by 2018?

单选题 The growth of population during the past few centuries is no proof that population will continue to grow straight upward toward infinity and doom. On the contrary, demographic history offers evidence that population growth has not been at all constant. According to paleo-ecologist Edward Deevey, the past million years show three momentous changes. The first, a rapid increase in population around one million B. C., followed the innovations of tool-making and tool-using. But when the new power from the use of tools had been exploited, the rate of world population growth fell and became almost stable. The next rapid jump in population started perhaps 10,000 years ago, when men began to keep herds, plow and plant the earth. Once again when initial productivity gains had been absorbed, the rate of population growth abated. These two episodes suggest that the third great change, the present rapid growth, which began in the West between 250 and 350 years ago, may also slow down when, or if technology begins to yield fewer innovations. Of course, the current knowledge revolution may continue without foreseeable end. Either way contrary to popular belief in constant geometric growth--population can be expected in the long nm to adjust to productivity.

单选题Neither of us ______ the experience of studying abroad. A．has B．have C．having D．are having

单选题Got milk? Be very afraid. Or, preferably, a bit skeptical. Some folks are about to try to convince you that milk is toxic. But the real question is, what"s more dangerous to your health: milk, or celebrities and activists embarked on the latest trendy crusade (改革)? This month marks the publicity-pumped debut of the Anti Dairy Coalition, a band of physicians, self-described "Holly-wood personalities" and others who decry what they call "the health and nutritional risks of consuming dairy products". The coalition, including its spokes-Jeremiah, writer George Plimpton, would have you believe that milk causes heart disease, cancer infections, asthma, allergies and tuberculosis. Robert Cohen, founder of the ADC (and author of Milk: The Deadly Poison , writes: "The Fountain of Youth and cure to illness can be obtained by giving up milk." Hyperbole aside, the ADC is spotlighting a question hotly debated by everyone from nutritionists to parents. Many patients ask doctors whether they should give up milk, like that supermodel they saw interviewed on TV. And to be sure, the ADC"s overwrought claims do have some scientific basis. Take heart disease. Foods like butter, cheese, ice cream and whole milk are packed with saturated fat (饱和脂肪), which blocks arteries (动脉) and can lead to heart attacks. That"s why most nutritionists advise switching to low-fat or skim milk and eating more yogurt and cottage cheese than Haagen-Dazs and Bric. Even skim milk, though, can trigger allergies in some people, including infants, who in any case will get more iron and other key nutrients from breast milk or formula. So must you flee from milk entirely? Yes, says Cohen, who holds that skim milk is the devil"s brew. It"s full of—are you sitting down?—protein. And here"s where the ADC starts twisting the facts to reach wild conclusions. Allergies are frequently triggered by proteins (true; asthma is an allergic condition (true; it"s been increasing dramatically (true; doctors don"t know the cause (true; therefore, the protein in milk must be the culprit (罪魁祸首)? A similar leap of illogic assumes that because women in the Netherlands. Denmark, Norway and Sweden consume lots of milk and also suffer high rates of breast cancer, the former must cause the latter. Another clunker is Cohen"s claim that widespread lactose intolerance (乳糖不耐受)—the inability to digest dairy products—means milk is of little use as a source of calcium. In fact, many cases of lactose intolerance are mild and interfere only slightly with calcium uptake. Many people intolerant of milk can easily digest yogurt. And lactase tablets (乳糖分解酵素片) can make dairy products digestible even in severe cases. If milk isn"t the perfect food, it"s still got some big things going for it. It"s an inexpensive source of calcium, protein, potassium and other vitamins and minerals. And unlike other sources of calcium, such as, say, steamed kale, milk is a food kids will eat. The ADC feels that milk is the root of most human maladies (疾病), but I can point to other single-issue obsessive who insist the villain is meat or wheat or sugar or some other substance that our species has long and happily consumed. I often learn something by examining their claims. But I keep coming back to the mainstream nutritionists, who emphasize a balanced diet and advise moderation in all things.

单选题Sleep is divided into periods of so-called REM sleep, characterized by rapid eye movements and dreaming, and longer periods of non-REM sleep.【C1】______ kind of sleep is at all well-understood, but REM sleep is【C2】______ to serve some restorative function of the brain. The purpose of non-REM sleep is even more【C3】______ . The new experiments, such as those【C4】______ for the first time at a recent meeting of the Society for Sleep Research in Minneapolis, suggest fascinating explanations【C5】______ of non-REM sleep. For example, it has long been known that total sleep【C6】______ is 100 percent fatal to rats, yet,【C7】______ examination of the dead bodies, the animals look completely normal. A researcher has now【C8】______ the mystery of why the animals die. The rats【C9】______ bacterial infections of the blood,【C10】______ their immune systems—the self-protecting mechanism against disease—had crashed.

单选题You shouldyour stupid ideas, otherwise you'll regret in the future. A. put down B. put away C. put aside D. put out

单选题______ is now one of the two official languages in New Zealand.