第247章 Lesson 51 The Arctic
- 跟美国学生同步练阅读：Smart Reading（英文原版 Grade 1-8）
- (加)韦恩·埃弗里特
- 323字
- 2017-12-29 12:36:18
Much of the Arctic is treeless tundra. There is little soil for plants, and the temperature is extre...
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Much of the Arctic is treeless tundra. There is little soil for plants, and the temperature is extre...