阅读下面短文, 从短文后各题所给的四个选项(A、B、C、D)中, 选出可以填入空白处的最佳选项。
    One day,it was raining heavily and I didn't have an umbrella,I had just1a bus and had to walk back to my house.I2walking in that direction,when I heard somebody shouting,“Sister,”“Sister.” I looked back and3the stationery（文具）shopkeeper.I went to him and asked what was the4.He said that since it was raining heavily,I could take a5in his shop,have a look at his new6and go home when the rain stopped.For a moment I hesitated（犹豫）,but the7of getting to have a look at the pens made me nod.
    To my surprise,I found that the8was larger than I thought.The stationery shopkeeper offered me a chair and took out the pens for me.I9a beautiful parker（派克）pen and had a try.It10so smoothly that I wanted to buy it with all my heart,11as expected,it was very expensive.The shopkeeper said,“I can give you the pen for ninety-five dollars12one hundred.”I looked up and thanked him for the13,but refused politely as it was14quite expensive for me.By that time,the rain had15,and after appreciating his16,I quickly walked back to my house.
    After that day,the shop became my17place to hang out .The shopkeeper used to18me pens always at discount prices and very often also offered me tea.He had much information about all kinds of pens and other writing instruments.19both of us knew nothing about each other,we had a deep friendship based on our common 20.

你告诉同学这是一把椅子时，应该说：________

某地级市一年中全市各级、各部门通过门户网站、固定公开栏、报纸、电视、公共查询场所等载体主动公开政府信息超过40万条，但由于缺乏与公众的沟通和互动，各公开平台的内容存在重复的问题。这种做法（    ）

①做到了公开为常态，是有效制约监督政府权力的关键

②利用了民主对权力的制约，但减少了政府的执行权力

③尊重了公民的知情权，但应加强与公众的沟通

④有利于对政府权力的监督，但增加了政务公开的成本

下图为中国城市化过程中某市城区面积和冬季平均气温的变化示意图。读图，分别表示城区面积和冬季气温变化的曲线是(    )

A砖长、宽、高分别为0.4m、0.2m、0.1m，它的重为160N，A砖的密度ρ_A=____kg/m³．另一种外形跟A砖一样的B砖，如图所示，当A砖侧放、B砖立方在水平地面时，A、B砖对地面的压强相等，将A、B砖沿水平方向截去相同的体积后，两砖对地面的压强变化之比△p_A：△p_B=____（g取10N/kg）