來(lái)源:網(wǎng)絡(luò)資源 2009-07-26 21:20:47
1.What'satheory?
2.What'sanexperimentfor?
3.DidDannyreadabouttheexperiment?Whatisitabout?
4.Doyouthinkthecardboardcanholdthewaterinthejar?Why?
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