Jack was ten years old, and his brother, Jimmy, was five. One day, after 小题1:(play) for an hour, they were hungry. Their mom took Jack into the kitchen. She gave him two apples and said to him: “Now give one of 小题2:(they) to your brother. But remember to do it like a gentleman.”

“Like a gentleman?” Jack asked. “How do gentlemen do it?”

“They always give the 小题3:(big) one to the other person,” answered his mom at once.

“Oh,” said Jack. He thought about this for a few 小题4:(second). Then he took these apples to his brother and said to him: “ 小题5:(pick) up one, Jimmy. And remember to do it like a gentleman.

质量为8kg 的均匀物块，在拉力F=2N 作用下，使平放在水平桌面上的物块作匀速直线运动，通过1m 距离。下列叙述错误的是：(g 取10N ／Kg)  

A．物块与桌面之间摩擦力大小是2N          

B．物块在运动过程中动能增加  

C．拉力在此过程中做功是2J                

D．物块在运动过程中内能增加