未知题型 The history of modern pollution problems shows that most have resulted from negligence and ignorancE.We have an appalling tendency to interfere with nature before all of the possible consequences of our actions have been studied in depth. We produce and distribute radioactive substances, synthetic chemicals and many other potent compounds before fully comprehending their effects on living organisms. Our education is dangerously incompletE.It will be argued that the purpose of science is to move into unknown territory, to explore, and to discover. It can be said that similar risks have been taken before, and that these risks are necessary to technological progress.These arguments overlook an important element. In the past, risks taken in the name of scientific progress were restricted to a small place and brief period of timE.The effects of the processes we now strive to master are neither localized nor brieF.Air pollution covers vast urban areas. Ocean pollutants have been discovered in nearly every part of the worlD.Synthetic chemicals spread over huge stretches of forest and farmland may remain in the soil for decades and years to comE.Radioactive pollutants will be found in the biosphere for generations. The size and persistence of these problems have grown with the expanding power of modern sciencE.One might also argue that the hazards of modern pollutants are small compared with the dangers associated with other human activity. No estimate of the actual harm done by smog, fallout, or chemical residues can obscure the reality that the risks are being taken before being fully understooD.The importance of these issues lies in the failure of science to predict and control human intervention into natural processes. The true measure of the danger is represented by the hazards we will encounter if we enter the new age of technology without first evaluating our responsibility to environment.Which of the following adjectives may best describe the tone of this text?A.UnconcerneD.B.Humorous.C.Serious.D.ExaggerateD.
未知题型 As used in the second sentence of the first paragraph, the phrase 'in depth' meansA.fully and thoroughly.B.distantly and remotely.C.seriously and extent.D.strongly and unpleasantly.
单项选择题 跨文化交际能力可分为交际能力和跨文化能力。交际能力包括：语言能力、语用能力和策略能力。三者相互联系，相互制约，协调工作。跨文化能力包括：对文化差异的敏感性、宽容性以及处理文化差异的灵活性，文化差异的敏感性是指文化差异的识别能力；宽容性是指对异国文化的理解和尊重；处理文化的差异的灵活性涉及两个方面，一是交际者根据对方文化的背景灵活调整自己的交际行为，使交际取得预期效果的能力，二是处理由文化差异而引起交际冲突的能力。
未知题型 By saying 'from the point of view of evolution, human beings are very young children indeed'(paragraph 3), the author meansA.very young children are not civiliseD.B.evolution does not help civilization forwarD.C.human beings are still at the beginning of their life on earth.D.human beings have learnt very little in a very long timE.
单项选择题 如何删除数组的最后一个元素() (3分) A. array_del B. array_push C. array_key D. array_pop
未知题型 The real reason for ChoicePoint's fast expansion is thatA.it collects and sells personal information.B.it has acquired nearly 60 firms since 1997.C.the industry is largely unregulated by the government.D.the information it provides is useful to many.
未知题型 马来西亚的主要宗教是（）。
单项选择题 言语交际中提出”地点安全准则”，主要是为了回避和提防潜在的听话人。
问答题 纳米纤维素膜除了在传统的应用领域得到深化外，在新型建材、电子器件、膜分离、艺术设计、功能包装等领域具有潜在的应用前景。比如我们可以将其应用到可折叠、轻便式透明导电的太阳能纸电池，或者柔性OLED显示器的衬底。主要是利用了他的那些优点？ A、 A. 可折叠 B、 B. 透明 C、 C. 透光率高 D、 D. 生物相容性
未知题型 The majority of people, about nine out of ten, are right-handeD.(1)_____ until recently, people who were left-handed were considered (2)_____ and once children showed this tendency they were forced to use their right hands. Today left-handedness is generally (3)_____, but it is still a disadvantage in a world (4)_____ most people are right-handeD.For example, most tools and implements are still (5)_____ for right-handed peoplE.In sports (6)_____ contrast, doing things with the left hand or foot, is often an advantagE.Throwing, kicking, punching or batting from the' (7)_____ 'side may result in throwing (8)_____ many opponents who are more accustomed to dealing with the (9)_____ of players who are right-handeD.This is why, in many (10)_____ at a professional level, a (11)_____ proportion of players are left-handed than in the population as a wholE.The word 'right' in many languages means 'correct' or is (12)_____ with lawfulness, whereas the words associated (13)_____ 'left', such as 'sinister', generally have (14)_____ associations. Moreover, among a number of primitive peoples, there is (15)_____ close association between death and the left hanD.In the past, in (16)_____ western societies, children were often forced to use their right hands, especially to write with. In some cases the left hand was (17)_____ behind the child's back so that it could not be useD.If, in the future, they are allowed to choose, (18)_____ will certainly be more left-handers, and probably (19)_____ people with minor psychological disturbances as a result of being forced to use their (20)_____ hanD.A.DownB.NeverC.UpD.Not