公元十一世纪的教会改革运动的开始应追溯到公元（）年的阿奎泰公爵。
A、900
B、910
C、920
参考答案：B
To their disappointment, two thirds of the milk ______ bad.
[ ]
A. have gone
B. has gone
C. were gone
D. was gone
动态RAM与静态RAM的主要不同点在于什么？
