单选题 Which of the following groups would the skyscraper issue most concern?
A． Electricians
B． Environmentalists
C． City planners
D． Television viewers
【答案】B。解析：细节理解题。文章第一段第二句提到了这一点：“Ecologists pointed out that a cluster oftall buildings in a city often overburdens public transportation and parking lot capacities．”这里ecologists(生态学者)实际上就是environmentalists(环境保护人士)。
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2根据以下材料，回答题
Social change is more likely to occur in societies where there is a mixture of different kinds of people than in societies where people are similar in many ways. The simple reason for this is that there
are more different ways of looking at things present in the first kind of society. There are more ideas, more disagreements in interest, and more groups and organizations with different beliefs.
In addition, there is usually a greater worldly interest and greater tolerance in mixed societies. All these factors tend to promote social change by opening more areas of life to decision. In a society
where people are quite similar in many ways, there are fewer occasions for people to see the need or the opportunity for change because everything seems to be the same. And although conditions
may not be satisfactory, they are at least customary and undisputed.Within a society,
social changes is also likely to occur more frequently and more readily in the material aspects of the culture than in the non-material, for example, in technology rather than in values; in what has been learned later in life rather than what was learned early; in the less basic and less emotional aspects of society
than in their opposites; in the simple elements rather than in the complex ones; in form rather than in substance; and in elements that are acceptable to the culture rather than in strange elements.
Furthermore, social change is easier if it is gradual. For example, it comes more readily in human relations on a continuous scale rather than one with sharp difference. This is one reason
why change has not come more quickly to Black Americans as compared to other American minori-ties, because of the sharp difference in appearance between them and their white counterparts.
The passage is mainly discussing
A． certain factors that determine the ease with which social changes occur
B． certain factors that promote social change
C． the necessity of social change
D． two different societies
