单选题Libraries are an investment for the future and should not be allowed to fall into______.

单选题Robots are used ______ a lot of work in place of man.

单选题He is _____ about his chances of winning a gold medal in the Olympics next year.

单选题(Writing) in a clear and terse style, the book (describes) the (author's) childhood experiences in a small town (just before) the outbreak of the Civil War.

单选题Because of the steady increase in demand for our china ornaments we have decided to ______ an agent to handle our export trade with your country. A．point B．appoint C．disappoint D．point out

单选题There was one thought that air pollution affected only the area immediately around large cities with factories and heavy automobile traffic. At present, we realize that although these are the areas with the worst air pollution, the problem is literally worldwide. (76) On several occasions over the past decade, a heavy cloud of air pollution has covered the east of the United States and brought health warnings in rural areas away from any major concentration of manufacturing_and automobile traffic. In fact, the very climate of the entire earth may be infected by air pollution. Some scientists consider that the increasing concentration of carbon dioxide in the air resulting from the burning of fossil fuels (coal and oil) is creating a "greenhouse effect"—conserving heat reflected from the earth and raising the world' s average temperature. If this view is correct and the world's temperature is raised only a few degrees, much of the polar ice cap will melt and cities such as New York, Boston, Miami, and New Orleans will be in water. (77) Another view, less widely held, is that increasing particular matter in the atmosphere is blocking sunlight and lowering the earth' s temperature—a result that would be equally disastrous. A drop of just a few degrees could create something close to a new ice age, and would make agriculture difficult or impossible in many of our top fanning areas. Today we do not know for sure that either of these conditions will happen ( though one recent government report drafted by experts in the field concluded that the greenhouse effect is very possible). Perhaps, if we are lucky enough, the two tendencies will offset each other and the world' s temperature will stay about the same as it is now.

单选题At that time, many readers (found) (it) difficult (believing) what Jules Verne had written in his book (to be true).A. foundB. itC. believingD. to be

单选题Critics thought that Keiko would ______.

单选题Why does the author give his opinion of the definition of poetry?

单选题Mobile phones help us communicate everywhere, which is very important. They are good at emergencies, when you've (21) a car accident, for instance. A mobile phone (22) save your life! Mobile phones are also (23) because they have many good features--we can take photos and send them all over the world. But every coin has two sides. The (24) thing about mobile phones is that you have no privacy. My boss and friends find me whenever they want! I haven't enjoyed a whole quiet day since the day I (25) my mobile phone. (26) disadvantage is that mobile phones make us lose good habits, such as punctuality. Before, when we (27) keep in touch so easily, if we had a date with someone, we tried our best to arrive (28) time. But now, because of the mobile phone, we are not afraid of (29) late any more, so, surprisingly enough, we make people wait! The third (30) I see is that I change my mobile phone once a year, and this means I'm spending (31) too much money on it. I think it is important to think (32) we use mobile phones. We should use things such as mobile phones, laptops, cameras, the Internet, and so on, (33) our needs. We can (34) our mobile phone when we don't want to be disturbed by (35) . If we know how to use it, we can eliminate its disadvantages.

单选题 传统的中国婚俗被视为中国传统文化礼仪的基础。通常，婚礼是隆重场合，有很多的礼节。婚礼有八大程序，包括求婚、生辰匹配、合婚(marriage divination)，下聘(betrothal gifts presenting)、确定婚期、置办嫁妆(dowry urging)、迎娶新娘、举行正式的结婚仪式。在中国传统的婚礼中，新娘由新郎牵着。她头顶红盖头，全程都垂在肩上。传统的中国婚俗已经实行了几千年。它们可能会因时间和地点而异，但在中国人的生活中一直占据着重要地位，对中国人的生活方式产生着深远的影响。

单选题We can draw the conclusion from the passage that ______.

单选题选出下面读音不同的选项。

单选题The great tragedy of life is not that men ______, but that they cease to love.

单选题The economy's ______ into recession began several months ago.

单选题 The mechanism that the eye can accommodate itself to different distances has been applied to automatic camera, which marks a revolutionary technique advance.

单选题My boss has always attended to the______of important business himself. A. transaction B. solution C. translation D. stimulation

单选题Mother was worried because little Alice was ill, especially ______ Father was away in France.

单选题 Spices not only enhance the flavor of foods we eat, but they also have anti-microbial (抗微生物) properties that can keep food from spoiling. And as anyone who has had their power go out in the summer can tell you, meat products spoil much faster than vegetables due to growth of bacteria and other microbes. So if it's true that a major reason spicy foods have been popular for so long is because they help prevent spoilage, one might expect traditional meat dishes to be spicier than vegetable dishes. Here, the authors did a scientific analysis of the spiciness of dishes in more than 100 cookbooks from 36 countries and found exactly that. Spices are aromatic (芳香的) plant materials that are used in cooking. Recently it was hypothesized that spice use yields a health benefit: cleansing food of parasites and pathogens (病原体) before it is eaten, thereby reducing food poisoning and food borne illnesses. In support, most spices have antimicrobial properties and use of spices in meat-based recipes is greatest in hot climates, where the diversity and growth rates of microorganisms are highest. A critical prediction of the antimicrobial hypothesis is that spices should be used less in preparing vegetables than meat dishes. This is because cells of dead plants are better protected physically and chemically against bacteria and fungi than cells of dead animals (whose immune system ceased functioning at death), so fewer spices would be necessary to make vegetables safe for consumption. We tested this corollary (推论) by compiling information on 2, 129 vegetable-only recipes from 107 traditional cookbooks of 36 countries. Analyses revealed that spice use increased with increasing ambient temperature, but less dramatically than in meat-based recipes. In all 36 countries, vegetable dishes called for fewer spices per recipe than meat dishes; 27 of these differences were significant. Of 41 individual spices, 38 were used less frequently in vegetable recipes; 30 of these differences were significant. Proportions of recipes that called for spice were also significantly lower for vegetable dishes. By every measure, vegetable-based recipes were significantly less spicy than meat-based recipes. Within-country analyses control for possible differences in spice plant availability and degrees of cultural independence. Results thus strongly support the antimicrobial hypothesis.