题目内容
4. 电池里面的化学物质产生电。
The produce electricity.
4. chemicals inside batteries
2. ( 2015 重庆中考 A 卷) Ma Yun,head of,is one of persons in the world.
A. rich B. richer
C. richest D. the richest
46. My father always tells jokes to make us (laugh) .
47. Our teacher often tells us ( help) the poor.
15. 把……和……连接到一起
16. 等一会儿
3. Electricity ( flow) through thin wires.
4. The toy car gets power from (battery) .
5. Trees can produce ( chemistry ) to protect themselves from insects.
7. Today,we have many other to pay besides coins or paper money.
A. excuses B. ways C. chances D. plans
l.Our teacher is having a (对话) with Danny.
2. We can put the vegetables in the (冰箱) to keep them fresh.
2. You must tidy it .
A. down B. up C. left D. right
9. 瞬间；片刻
10. 电池
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