【单选题】—Thank you for joining in our conversation tonight. —_______.
【单选题】---Thank you very much for your help. ---______.
D.
I’m serving the people.
【简答题】阅读理解。 Look at this . Here’s a pencil case, it’s orange, it’s my pencil case, it’s on the desk. Look! This is a pen, it’s black. And this is an eraser, it’s blue and white. They’re both (都) in the penc...
【单选题】汽缸漏气试验时,若在水箱加水口看到气泡,表示 。
【简答题】口答题 ( 1 )抛物线 y 2 =4x 的焦点到准线的距离是( ), 焦点坐标是 准线方程是( ), ( 2 )抛物线的焦点在 x 轴负半轴上,焦点到准线的距离是 2 , 则抛物线的标准方程是( ),