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- 4二个圆形+三个三角形=78,二个圆形+五个三角形=98,圆形=(),三角形=().
- 5They plan to set up a monument in memory of the dead men
- 6校园里有柏树15棵,柳树的棵树是柏树的2/3,又是松树的2/7,松树有几棵?
- 7Yes But if you know you will do it.I think you can do well
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- 9DNA 分子带电么?正电还是负电,为什么?
- 10I'm writing to tell you something about the new-made plan in our school .请问new为什么改成newly?