译文
背·英文
课文
1 Lesson 4 Seeing hands 2020-12-15
2 Lesson 3 Matterhorn man 2020-12-14
3 Lesson 2 Spare that spider 2020-12-13
1 Lesson 1 Finding fossil man 2020-10-03
2 Lesson 2 Spare that spider 2020-12-13
3 Lesson 3 Matterhorn man 2020-12-14
4 Lesson 4 Seeing hands 2020-12-15
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