曲阜的孔府菜是我国最大、最精湛的官府菜 （ ）
参考答案：对
《天朝田亩制度》
Stack is quite simple. Many computer systems have stacks built into their circuitry. They also have machine-level instructions to operate the hardware stack. Stack is（）in computer systems.
A. useless
B. not important
C. simple but important
D. too simple to be useful
