单选题The English sentence If only I could fly! is in imperative mood.

单选题How much living space does a person need? What happens when these space requirements are not adequately met? Sociologists and psychologists are【K17】______experiments on rats to try to determine the effects of【K18】______on humans. Recent studies have shown that the【K19】______ of rats is greatly affected by space. If rats have adequate【K20】______space, they eat well, sleep well, and reproduce well. But, if their living conditions become too crowded, their behavior 【K21】______and even their health conditions【K22】____________perceptibly. They cannot sleep and eat well, and【K23】____________of fear and tension become obvious. The more【K24】____________they are, the more they【K25】____________to bite each other and even【K26】____________each other. Thus, for rats, population and violence are directly【K27】____________. Is this a【K28】____________law for human society as well? Is adequate space not【K29】____________desirable but also【K30】____________for human survival?

单选题______abolished slavery in the U. S.

单选题It would be far better if collectors could be persuaded to spend their time and money in support of ______ archaeological research.

单选题As a literary trend in Britain,____came as a result of discount of certain enlighteners in social reality in the middle of 18th Century.

单选题______is often considered as the "poets" poet" because of his considerable influence on later poets.

单选题At present, it is not possible to confirm or to refute the suggestion that there is a causal relationship between the amount of fat we eat and the______of heart attacks

单选题Meaning is extracted from text or speech by relating what is presented to information stored in short-term memory.

单选题Because of its excellence in quality, for the last two years, Audi car has ______ Germany"s Touring Car Championship.

单选题Journalists keep writing about and reporting on important events. This better reflects the recreational function of language.

单选题Which of the following is true of an allophone? (对外经贸2005研)

单选题This cycle of growth, reached its peak in 1986, when the annual rate of growth was ______ 12 percent.

单选题There are different types of affixes or morphemes. The affix "-ed" in the word "learned" is known as a(n)______.

单选题Edgar Allan Poe is not only a poet, but also the founding father of ______in American literature.

单选题For each group of items in the following, point out which item does not fall under the same category as the rest and explain the reason in ONE sentence.

单选题"If you call me that name again, I"m going to explode! "

单选题"The man standing in the hallway looked depressed" is a(an)______ construction.

单选题Nouns, verbs and adjectives can be classified as______. (西安交大2008研)

单选题What semantic relation do the following sentences have?A. I saw a girl.B. I saw a child.

单选题______refers to the movement very active in the early part of the 20th century, agitated for women"s political right to vote.