提示：①把题目补充完整，横线上可填“取得好成绩”、“受到了表扬”、“旅游”等等；②通过具体的事例写出开心的原因，写出自己真实的感受。③字数300字以上。
⑴What's your favourite food? ____
⑵Do you like milk?____
⑶What's for dinner?____
⑷What would you like?____
⑸Would you like some tea?____
A. I like rice and meat for dinner.
B. No, I don't.
C. I would like some bread.
D. No, thanks.
E. Dumplings are my favourite food.
如图所示，在水平拉力F的作用下，物体A沿水平桌面做匀速直线运动，弹簧测力计B的示数为10N，则物体A与水平桌面间的摩擦力大小为____N，拉力F的大小为____N．
