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单项选择题

A．the different objectives of those involved in these r……

According to the author, distinctions between those engaged in the creative arts and in natural sciences 9an in part be explained by ______.

A．the different objectives of those involved in these respective pursuits
B．the different methods they employ in the collection of data to support their theories
C．the different ways in which they attempt to extend accepted conventional forms
D．the different principles of organization that they utilize in order to create new works
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单项选择题Which of the following would most likely follow the final sentence of the passage

A．In the similar manner, several modern composers successfully established musical conventions.
B．Similarly, the succeeding generation of composers manipulated accepted musical forms.
C．In contrast to Beethoven, however, even great modern composers like Bela Bartok did not attempt to alter accepted musical conventions,
D．Musicologists are continuing to study the compositional styles of composers in order to determine whether their contributions have been' innovative.

单项选择题The passage implies that an original contribution in science is one that ______.

A．is often quoted in the work of other scientists
B．is careful not to make a value judgement about the use of data
C．is applauded by all distinguished experimentalists
D．generates a novel and well-founded generalization

单项选择题The first two paragraphs tell us a true story of ______.

A．international cooperation via the Internet
B．how dangerous thallium can be to humans
C．how one can get help from the Internet
D．the girl’s recovery from thallium poisoning

单项选择题The highly efficient modem communication system began ______.

A．over a century ago
B．in the middle 1960s
C．in the late 1980s
D．in the year 1980

单项选择题Which of the following best expresses the main idea of the passage

A．It is optical fibers and lasers that have made the information superhighway possible.
B．People can communicate with each other more quickly now on the Internet.
C．It has taken quite a long time for the Internet to come into existence.
D．If one is seriously ill, he can always get help via the modem communication system.