Teddy: Gravity is very important. Bob: What do you mean? Teddy: Gravity is the force that pulls everything down. Bob:【D8】______

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问题 Teddy: Gravity is very important.
Bob: What do you mean?
Teddy: Gravity is the force that pulls everything down.
Bob:【D8】______
Teddy: If you pour your water into a glass, the water goes down into the glass.
Bob:【D9】______
Teddy: Without gravity, the water world would go up. Without gravity, we would go up, too.
Bob: We would float into the sky like a balloon?【D10】______
A. I’ m not sure.
B. Of course it does.
C. That would be fun.
D. Give some examples.
【D8】

选项 A、 
B、 
C、 
D、 

答案D

解析 上文中Teddy说重力非常重要,Bob问他是什么意思,接着Teddy解释了重力就是把地上一切东西向下拉的力。空格下面Teddy举了水的例子,备选项中只有选项D符合题意,故选D。
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