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| Darwin＇s Student Days | |
| 摘 要： | A woman has at least 2 pairs of black gloves, 2 pairs of white gloves, and 2 pairs of red gloves in a drawer. The gloves will fit either hand; they are not right or lefthanded and each pair is identical. If they are removed from the drawer at a time without looking at the colors, |
| 关 键 词： | 中学 英语 课外阅读 阅读材料 |
| 本文献已被 维普 等数据库收录！ | |