英语四级
A．the necessity of social change
B．certain factors that determine the ease with which social change occurs
C．the way to slow down social change
D．how to promote social change
【解析】选[B]。文章首句就提到了社会变化经常发生在混合社会，然后具体分析了社会变化经常容易发生在哪些方面，因此能正确概括文章大意的是[B]。[A]原文未提及；原文的目的不是为了介绍如何减缓或加速社会变迁，而只是分析哪些因素影响社会变迁，因此排除[C]和[D]。
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A．scaled
B．stripped
C．peeled
D．sliced
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