单选题The boy could not Ureconcile/U himself to the failure. He did not believe that was his lot.

单选题 Now listen to the following recording and answer questions24-26.

单选题They are sure they have all the facts they need to ______ the existence of a black hole.

单选题What experience do you have that is______to this position?

单选题Mass transportation revised the social and economic, fabric of the American city in many ways so as to permit an easy row of traffic. A. texture B. textile C. network D. structure

单选题______ we draw useful lessons from them, we may turn difficulties to a good account.

单选题Among humans, the effects of aging vary from one individual to another. The average life ______ for Americans is around 75 years, almost twice what it was in the early 190Os.

单选题The word "they" in "…together they threaten to confuse." (Line 3, Para. 5) refers to

单选题Since you feel so strongly about this matter，you should make your views ___to other committee members.

单选题It's disturbing to note how many of crimes we do know about were detected______, not by systematic inspections or other security procedures.

单选题The cat was playing with a(n)______mouse.

单选题Neither his father nor his mother was willing to give______consent to the marriage.

单选题It was ______ the professor regarded with such contempt.

单选题According to some psychologists, in developing a model of cognition, we must recognize that perception of the external world does not always remain independent ______ motivation.

单选题She never ______ to read the news but turned at once to the crossword on the last page. A. indulged B. troubled C. exerted D. frustrated

单选题 Mathematical ability and musical ability may not seem on the surface to be connected, but people who have researched the subject and studied the brain say that they are. Three quarters of the bright but speech-delayed children in the group I studied had a close relative who was an engineer, mathematician or scientist and four fifths had a close relative who played a musical instrument. The children themselves usually took readily to math and other analytical subjects and to music. Black, white and Asian children in this group show the same patterns. However, it is clear that blacks have been greatly overrepresented in the development of American popular music and greatly underrepresented in such fields as mathematics, science and engineering. If the abilities required in analytical fields and in music are so closely related, how can there be this great discrepancy? One reason is that the development of mathematical and other such abilities requires years of formal schooling, while certain musical talents can be developed with little or no formal training, as has happened with a number of well-known black musicians. It is precisely in those kinds of music where one can acquire great skill without formal training that blacks have excelled in popular music rather than classical music, piano rather than violin, blues rather than opera. This is readily understandable, given that most blacks, for most of American history, have not had either the money or the leisure for long years of formal study in music. Blacks have not merely held their own in American popular music. They have played a disproportionately large role in the development of jazz, both traditional and modem. A long string of names comes to mind—Louis Armstrong, Charlie Parker... and so on. None of this indicates any special innate (先天的) ability of blacks in music. On the contrary, it is perfectly consistent with blacks having no more such inborn ability than anyone else, but being limited to being able to express such ability in narrower channels than others who have had the money, the time and the formal education to spread out over a wider range of music, as well as into mathematics, science and engineering.

单选题To our ______, Geoffrey's illness proved not to be as serious as we had feared. A. anxiety B. relief C. view D. judgment,

单选题I used to think memory ______ were for the hopelessly disorganized, but when I hit mid- 40s it takes three trips between my home and office before I remember why I set out on the journey.

单选题It would be ________ a risk to let the child go to school by himself.

单选题If parents remain silent about offensive TV contents,______.