I’ll pay a visit to the Inner Mongolia , there is a large temperature difference between day and night.
A. in which
B. for which
C. from which
D. of which
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(答案→)A. in which
B. for which
C. from which
D. of which
解析：句意：我要去内蒙古参观，那里昼夜温差很大。通过分析句子结构，可知这个句子中包含一个非限制性定语从句，在……里，要用介词in，选A。