问题描述：
__in beijing,people usually put on warm clothers.A winter B in winter C on winter D at winter
1、__in beijing,people usually put on warm clothers.A winter B in winter C on winter D at winter
2、it is colder _____ beijing than ______nanjing in winter
1、__in beijing,people usually put on warm clothers.A winter B in winter C on winter D at winter
2、it is colder _____ beijing than ______nanjing in winter
问题解答：
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