托福考试

根据网考网考试中心的统计分析，以下试题在2018/7/30日托福考试习题练习中，答错率较高，为：31%
【单选题】Perhaps the most significant postwar trend was the decentralization of cities throughout the United States, （） when massive highway-building programs permitted greater suburban growth. 
A. and accelerated a phenomenon 
B. a phenomenon that accelerated 
C. accelerating a phenomenon which, 
D. the acceleration of which phenomenon 

网考网参考答案：B，答错率：31%
网考网试题解析：
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