关于入坑前的注意事项，说法正确的是（）
A、新员工不准入坑
B、两人同时上下梯子时，要手抓牢、脚踏稳
C、在现场追逐打闹
D、不得依靠栏杆
参考答案：D
进入Windows 98安全模式的正确方式是（）。
A.在开机时按下F8键然后选择"安全模式启动"选项
B.在DOS状态下，输入"C：>Win"，然后按回车键
C.退出Windows98按F1键
D.在DOS状态下，输入"C：>Win98"然后按回车键
I walked slowly through the market, where people（）all kinds of fruits and vegetables. I studied the prices carefully and bought what I needed.
A. sell
B. were selling
C. had sold
D. have sold
