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. "

单项选择题 None of these______ is an end in itself. They are tentative, experimental. They are movements not towards something definite but away from something definite.