You blow up a balloon.Is it heavier or lighter than the uninflated balloon?A.Heavier B.Lighter C.They weigh the same

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You blow up a balloon.Is it heavier or lighter than the uninflated balloon?A.Heavier B.Lighter C.They weigh the same
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You blow up a balloon.Is it heavier or lighter than the uninflated balloon?A.Heavier B.Lighter C.They weigh the same
You blow up a balloon.Is it heavier or lighter than the uninflated balloon?
A.Heavier B.Lighter C.They weigh the same

You blow up a balloon.Is it heavier or lighter than the uninflated balloon?A.Heavier B.Lighter C.They weigh the same
你说吹好了一个气球后,这气球是比原来的轻还是重..这我也不清楚..
如果你选择一样重那就是C,如果你选择重那就是A..而B我也不知道是什么...