货币政策的工具包括( )。
A．公开市场业务
B．贴现率政策
C．准备率
D．选择性信用管制
E．国际经济政策
参考答案：A,B,C,D
什么叫气体的内能，内能包括哪两部分？
Questions 6 to 10 are based on the following news.
A. Because the nuclear reactor is Pakistan’s property. B. Because Russia helped build the reactor in the 1960s. C. Because the uranium was provided by other nations. D. Because its neighbors are very sensitive about its nuclear program.
