按动各按键时用力应适度，不得用力拍打（）、按键和显示屏。
A．键盘
B．系统
C．导轨
D．刀具
参考答案：A
关于动脉粥样硬化性肾萎缩哪项是正确的
A．双侧肾细颗粒状B．单侧肾细颗粒状C．双侧肾大瘢痕D．单侧肾大瘢痕
They went into a small house but ＿＿＿.
A．no persons did they find
B．not a person found they
C．not a person did they find
D．not a person they found
