Mathematical ability and musical ability are closely connected. My book "Lat

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问题 Mathematical ability and musical ability are closely connected. My book "Late-Talking Children" drove the point 【C1】______. Three quarters of the bright 【C2】______ speech-delayed children in the group I studied had a close relative who was an engineer or mathematician—and four fifths had a close relative who played a musical【C3】______. The children themselves usually【C4】______ readily to math and other【C5】______subjects—and to music.
Black and white children in this group show the same patterns.【C6】______, looking at the larger world around us, it is clear that blacks have been【C7】______in the development of American popular music and greatly underrepresented in such fields as mathematics and engineering. If the abilities required in analytical fields and in music are so closely related, how can there be this great【C8】______? One reason is that the development of mathematical and other such abilities requires years of formal schooling,【C9】______ certain musical talents can be developed with little formal training,【C10】______has happened with many well-known black musicians.
It is in those kinds of music where one can acquire great skill without formal training【C11】______ blacks have excelled—popular music【C12】______ classical music. This is understandable, 【C13】______ that most blacks have not had either the money【C14】______ the leisure for formal study. Blacks have also played a large role in the development of jazz. A long string of names comes 【C15】______mind—Duck Ellington, Scott Joplin, W. C. Handy, and so on.
None of this【C16】______ any special innate ability of blacks in music. On the contrary, it is perfectly【C17】______ with blacks having no more such talent than anyone else, but being【C18】______ to being able to express such ability in more narrow channels【C19】______ others who have had the money, the time and the formal education to spread out over a wider range of music,【C20】______ into mathematics and engineering. [br] 【C16】

选项 A、ensures
B、assures
C、assumes
D、entitles

答案 C

解析动词辨析题。句意为：上述情况并没有假定黑人在音乐方面有特殊的天赋。[A]ensures“保证，担保”；[B]assures“使确信”；[C]assumes“假定，预设”；[D]entitles“给……起标题；赋予权力”。[C]assumes符合文意。

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