单项选择题 In addition to the Mandarin dialects, there are six other Chinese dialect groups, spoken mainly in southern and southeastern China. This linguistic______, particularly in southeastern China, has provided the basis for strong regional identity and some ethnic variation within the larger Han community.

单项选择题 According to the International Bank for Reconstruction and Development in 1995, the wealthiest 10 percent of China’s population received 9 percent of the income, while the poorest 10 percent received only 2 percent. Such ______ in income and wealth are found in both cities and rural areas.

单项选择题 "The foreign teachers wondered what we Chinese teachers do in political meetings and I told them that we had to go through the______of lengthy formalities. "