单选题{{B}}Passage Five{{/B}} Standard usage include those words and expressions understood, used, and accepted by a majority of the speakers of a language in any situation regardless of the level of formality. As such, these words and expressions are well defined and listed in standard dictionaries. Colloquialisms, on the other hand, are familiar words and idioms that are understood by almost all speakers of language and used in informal speech or writing, but not considered acceptable for more formal situations. Almost all idiomatic expressions are colloquial language. Slang, however, refers to words and expressions understood by a large number of speakers but not accepted as appropriate formal usage by the majority. Colloquial expressions and even slang may be found in standard dictionaries but will be so identified. Both colloquial usage and slang are more common in speech than in writing. Colloquial speech often passes into standard speech. Some slang also passes into standard speech, but other slang expressions enjoy momentary popularity followed by obscurity. In some cases, the majority never accepts certain slang phrases but nevertheless retains them in their collective memories. Every generation seems to require its own set of words to describe familiar objects and events. It has been pointed out by a number of linguists that three cultural conditions are necessary for the creation of a large body of slang expressions. First, the introduction and acceptance of new objects and situations in the society; second, a diverse population with a large number of subgroups; third, association among the subgroups and the majority population. Finally, it is worth noting that the terms "standard", "colloquial," and "slang" exist only as abstract labels for scholars who study language. Only a tiny number of the speakers of any language will be aware that they are using colloquial or slang expressions. Most speakers of English will, during appropriate situations, select and use all three types of expressions.

单选题(2010) The harder we try,____it is for us to overcome the difficulties and succeed.

单选题The worlds first large electronic computer (1946) ______. A．was built after the World War Ⅱ B．was used for over 10 years C．contained 25000 valves D．could perform only 10000 calculations per second

单选题W.R. Grace is typical long-lived company that has nm the following business except ______.

单选题Only the gardener A is capable of endlessly reviving B so much hope that this year, C regardless of drought, flood, typhoon, or his own stupidity, this year D is going to do it right!

单选题Speaker A: You'll never guess what was going on in our school last week. Speaker B: ______. A. Go on, surprise me B. Yes, that must be lovely C. Yes, I can D. You are telling me

单选题 Science textbooks and technical and professional journals are usually made up of several parts and contain various special features, many of which have a standard format.{{U}} (31) {{/U}}usually contain a large number of these parts; journals and{{U}} (32) {{/U}}contain many, but not all of them. Knowing where to look for information and{{U}} (33) {{/U}}to expect in a book can greatly increase your ability to use all the information there. Explanations of and practice using some of these textbook parts and{{U}} (34) {{/U}}are covered in these even numbered lessons. The features in textbooks are{{U}} (35) {{/U}}into the following three categories. Front matter is the{{U}} (36) {{/U}}-numeral paginated section at the front of most books. The text is the main body of the book. The{{U}} (37) {{/U}}matter comprises the additional sections at the back of most books.{{U}} (38) {{/U}}our discussion of these three sections will deal mainly with textbooks, the practice provided will greatly{{U}} (39) {{/U}}your comprehension of scientific{{U}} (40) {{/U}}as well.

单选题—How much sugar is left? A. None B. Nothing C. Not many D. Few

单选题Many disciplines of science are actually ______ rather than becoming farther apart.

单选题Cupta has estimated that Indian marriages based on love occur among less than one percent of the population because______

单选题I don't trust the man; he's not______.

单选题Prince Charles, the longest-waiting ______to the throne in British history, has spoken of his 'impatience' to get things done.(2013年北京大学考博试题)

单选题A: Could you get me Extension 6459, please? B: ______. A. Hello? This is Tom Brown. B. Sure. Here you are. C. Sorry. The line is engaged. D. John Smith's office. What can I do for you?

单选题Cindy: Thanks for all your help. Joe: No problem. Have a good day. Cindy: ______ Thanks again. Bye. A. I will. B. You too. C. It will be. D. I think so.

单选题—Is Tom still smoking ? —No. By next Saturday he ______ for a whole month without smoking a single cigarette.A. will goB. will have goneC. will have beenD. has been going

单选题The rocks are carefully crushed ______ the diamonds are not destroyed.

单选题Whenever a camera was pointed at her, Marilyn would instantly ______ herself into a radiant star. A. transport B. transfer C. transform D. transgress

单选题The color______from yellow through green to black.

单选题There is few evidence that children in language classrooms learn foreign languages any better than adults in similar classroom situations. A. B. C. D.