如图，

在由边长都为1个单位长度的小正方形组成的 $6\times 6$ 正方形网格中，点A，B，P 都在格点上．请画出以AB为边的格点四边形（四个顶点都在格点的四边形），要求同时满足以下条件：

条件1：点P到四边形的两个顶点的距离相等；

条件2：点P在四边形的内部或其边上；

条件3：四边形至少一组对边平行．

    It is Saturday morning. My father is ____  the car.  I am ____  him. My mother is ____  ____   in the kitchen.  Helen is ____ the living room. She is ____  the floor. Where is Tim? What is he doing now? Tim is in his ____ .He is ____. Ben's dog is sleeping too.

若$a_i,b_i\in R_{+}\left(i=1,2,3,...,n\right)$  ，求证$\left(a_1{b}_1+···+a_n{b}_n\right)\left(\frac{a_1}{b_1}+···+\frac{a_n}{b_n}\right)\ge {\left(a_1+···+a_n\right)}^2$  .

下列实验室除杂所用试剂和操作均合理的是（　　）