心信念是指人们对某种观点，原则和（）形成的真挚信仰。
A、现实
B、需要
C、理想
D、动机
参考答案：C
（-1）•2002-（-1）•13=（ ）
A．-2001
B．-1989
C．2
D．-2015
Since the opening and reform policy, China a boom in its economy.
A．enjoys
B．has been enjoying
C．enjoyed
D．having enjoyed
