目前常用的手动综合验光仪的杰克逊交叉柱镜（）红点表示（）柱镜的轴。
参考答案：JCC；负
They _______ England and they will be back next week. [ ]
A. have gone to
B. have been to
C. have gone in
D. has been on
计算机替代手工记账是单位能否成功实施会计电算化的起点。( )
