单选题They applied for a ______ of 40,000 to buy a house.

单选题The passage provides information to answer which of the following questions?

单选题To many people, a husband and wife alone do not seem a proper family—they need children to enrich the circle, to ______ family character and to gather the redemptive influence of offspring.

单选题It is reported that the worst pedestrian {{U}}jam{{/U}} in this city occurs around this crossroads.

单选题2 For laymen ethnology is probably the most interesting of the biological sciences for the very reason that it concerns animals in their normal activities and therefore, if we wish, we can assess the possible dangers and advantages in our own behavioral roots. Ethnology also is interesting methodologically because it combines in new ways very scrupulous field observations with experimentations in laboratories. The field workers have had some handicaps in winning respect for themselves. For a long time they were considered as little better than amateur animal-watchers--certainly not scientists, since their facts were not gained by experimental procedures: they could not conform to the hard-and-fast ruie that a problem set up and solved by one scientist must be tested by other scientists, under identical conditions and reaching identical results. of course many situations in the lives of animals simply cannot be rehearsed and controlled in this way. The fall flocking of wild free birds can't be, or the homing of animals over long distances, or even details of spontaneous family relationships. Since these never can be re produced in a laboratory, are they then not worth knowing about? The ethnologists who choose field work have got themselves out of this impasse by greatly refining the techniques of observing. At the start of a project all the animals to be studied are live-trapped, marked individually, and released. Motion pictures, often in col or, provide permanent records of their subsequent activities. Recording of the animals' voices by electrical sound equipment is considered essential, and the most meticulous notes are kept of all that occurs. With this material other biologists, far from the scene, later can verify the reports. Moreover, two field observers often go out together, checking each other's observations right there in the field. Ethnology, the word, is derived from the Greek ethos, meaning the characteristic traits or features which distinguish a group--any particular group of people or, in biology, a group of animals such as a species. Ethnologists have the intention of studying "the whole sequence of acts which constitute an animai's behavior. " In abridged dictionaries ethnology is sometimes defined simply as "the objective study of animal behavior," and ethnologists do emphasize their wish to eliminate myths.

单选题The detective and his assistant have begun to ______ the mysterious murder. A. look into B. see to C. make over D. come through

单选题Many theories concerning the causes of juvenile delinquency ( crimes committed by young people) focus either on the individual or on society as the major contributing influence. Theories (21) on the individual suggest that children engage in criminal behavior (22) they were not sufficiently penalized for previous misdeeds or that they have learned criminal behavior through (23) with others. Theories focusing on the role of society suggest that children commit crimes in (24) to their failure to rise above their socioeconomic status, (25) as a rejection of middle-class values. Most theories of juvenile delinquency have focused on children from disadvantaged families, (26) the fact that children from wealthy homes also commit crimes. The latter may commit crimes (27) lack of adequate parental control. All theories, however, are tentative and are (28) to criticism. Changes in the social structure may indirectly (29) juvenile crime rates. For example, changes in the economy that (30) to fewer job opportunities for youth and rising unemployment (31) make gainful employment increasingly difficult to obtain. The resulting discontent may in (32) lead more youths into criminal behavior. Families have also (33) changes these years. More families consist of one-parent households or two working parents; (34) , children are likely to have less supervision at home (35) was common in the traditional family structure.

单选题Any troop of wild animals should be approached warily.

单选题Knowing something as a whole is far from knowing all its______.

单选题Jacobson is often referred to ______ at the factory.

单选题You've been talking with David all evening when you ought to be ______ with other guests.

单选题The peach tree they planted when they got married began to______fruit last year.

单选题Wherever two or more unusual traits or situations are found in the same place, it is tempting to look for more than a coincidental relationship between them.

单选题______ this coming Thursday, it will be too late to enroll of the course. A. As of B. As for C. As to D. As on

单选题He raised his eyebrows and stuck his head forward and ______ it in a single nod, a gesture boy, used then for O. K. when they were pleased.

单选题When plutonium undergoes fission, its atoms break apart, giving off a great deal of energy

单选题For Sauces not only used his ______ in the hold up, but also made his get-away in his own easily recognized family car.