董仲舒说：“古之造文者，三画而连其中，谓之王。三画者，天、地与人也；而连其中者，通其道也……非王者，孰能当是？”（   ）

据材料推断，董仲舒意在

B

Dear Tom,

    Thanks for your letter. Do you want to know about my evening? Well, I usually get home from work at 6:00 p.m. I cook dinner for my family—my parents, my sister, and my brother. After dinner I usually watch TV, play computer games or play chess. I like playing chess because my father works in a chess club. I take a shower at around nine o'clock and then go to bed at around nine thirty. Sometimes I read some books because I can learn something about my work. How about your evening? Write to me soon, please.

Best wishes,

Victor

玩滑板车是小朋友们喜爱的一项运动。如图所示，小朋友一只脚踏上滑板车之后与踏上之前相比，滑板车对地面的压强会____ ；小朋友的另一只脚用力蹬地，使踏板车向右滑动起来，脚离地后，由于____，滑板车将继续向右滑行。请在图中画出滑板车向右滑行时前轮对地面摩擦力的示意图。

如图将物理课本按在教室垂直的墙壁上，课本正在匀速下滑，下列说法正确的是（　　）