The best title for this passage is ______ We drop a piece of metal into a jar full of water. The metal will float if it weighs

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问题 The best title for this passage is ______
We drop a piece of metal into a jar full of water. The metal will float if it weighs less than

选项 A、an equal amount of gold
B、the water that leave the jar
C、all the water in the jar
D、an equal amount of wood

答案B

解析 由本文第二段第三行到第四行可知本题答案为B。
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