未知题型 Brain researchers have discovered that the formation of new habit can be ______.A．predictedB．regulatedC．tracedD．guided

判断题 所有类型的变量中，等比变量的测量精确程度是最高的。()

未知题型 Why do Americans feel humiliated?A．Their economy is plunging(猛跌).B．Their currency has slumped.C．They can't afford trips to Europe.D．They have lost half of their assets.