单项选择题

The likelihood of America’s exhausting her natural resources is growing less. All kinds of waste are being recycled, and new uses are constantly being found for almost everything. We are getting more use out of what we produce, and are manufacturing many new byproducts out of what we formerly threw away. It is, therefore, unnecessary for us to continue to ban logging in national parks, nature reserves, or areas inhabited by endangered species of animals.Which one of the following most seriously undermines the conclusion of this argument（）

A.The increasing amount of recycled material made available each year is equal to one-tenth of the increasing amount of natural material consumed annually.
B.Recent studies have shown that the number of endangered animals throughout the world fluctuates sharply and is chiefly determined by changes in meteorological conditions.
C .The logging industry contributes huge sums of money topolitical campaigns in states where it has a financial interest.
D.The techniques that make recycling possible are constantly improved so that more is reclaimed for lower costs each year.
E.Political contributions by the recycling industry are now greater than those of either the logging or animal protection interests.

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单项选择题

When you first saw a piece of African art, it impressed you as a unit; you did not see it as a collection of shapes or forms. This, of Line course, means that the shapes and volumes within the sculpture itself were coordinated so successfully that the viewer was affected emo-tionally.It is entirely valid to ask how, from a purely artistic point of view, this unity was achieved.And we must also inquire whether there is a recurrent pattern or rules or a plastic language and vocabulary that is responsible for the powerful communication of emotion which the best African sculpture achieves. If there is such a pattern of rules, are these rules applied consciously or instinctively to obtain so many works of such high artistic quality It is obvious from the study of art history that an intense and unified emotional experi-ence, such as the Christian credo of the Byzantine or 12th or 13th century Europe,when espoused in art forms, gave great unity,coherence, and power to art. But such an inte-grated feeling was only the inspirational ele-ment for the artist, only the starting point of the creative act. The expression of this emo-tion and its realization in the work could be done only with discipline and thorough knowledge of the craft. And the African sculp-tor was a highly trained workman. He started his apprenticeship with a master when a child,and he learned the tribal styles and the use of tools and the nature of woods so thoroughly that his carving became what Boas calls motor action. He carved automatically and instinctively.The information in the passage suggests that a mature African carver might best be compared to a（）

A.chef following a recipe
B.fluent speaker of English just now beginning to study French
C.batter who hits a home run the first time at bat
D.veteran fiddler expertly varying a traditional tune
E.senior editor correcting the prose of an unidiomatic author

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The passage states that the troposphere is the warmest part of the atmosphere because it（）

A. is closest to the sun
B. contains electrically charged particles
C. radiates heat into space
D. has winds and air currents that distribute the heat
E. is warmed by the earth’s heat