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>> 我很满意，每个单元都很详细，并且有点难度，突出了重点和考点。???
我很满意，每个单元都很详细，并且有点难度，突出了重点和考点。???
It\'s good choice for us.
It\'s cheaper than small shop near the school .
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It\'s good choice for us.
It\'s cheaper than small shop near the school .