题目

用所给单词的适当形式完成短文。 get  take  weekend dinner  study  big  this  or old country than buy    What do you do to get pocket money (零花钱) from your parents? In Western 1.   many children do chores to get pocket money. They usually start to do 2. at 10 years old. School students have to do homework and 3. for tests. They don’t have a lot of free time in the week. They often do chores at the 4. Yong kids only do easy chores. So they don’t 5. much money. But that is all right. Many of them only want to6. candy. And candy is cheap! They help wash up（2009?白下区一模）科考人员在野外过夜时，通常会点燃一堆篝火，加热食物、温暖身体…．这是利用热传递热传递的方法改变物体的内能．当篝火熄灭时，散失的热量不会自动重新聚集，寒冷将会重新光临；同样地，汽车制动时，由于摩擦，汽车的机械能机械能转变为地面和空气的内能，这些散失到空气和地面的内能，不能自动地用来再次开动汽车，这说明能量的转化和转移具有方向性方向性．