坚持科学发展观，要正确认识和处理( )和市场的关系，即要充分发挥市场在资源配置中的基础性作用。
A．环境
B．能源
C．政府
D．人口
参考答案：C
先化简再求值：4x（x2+x+1）﹣2（2x﹣1）﹣2x2，其中x=﹣2．
In software engineering and systems engineering, （）is a description of a system's behavior as it responds to a request that originates from outside of that system.
A.black box
B.busines srule
C.traceability matrix
D.use case
