20160911—TASK 6
Listen to part of a lecture in an Astronomy class.
（掃描封底二維碼獲取該題聽力音頻）
Using points and examples from the lecture, describe two features that a location for building an ob...
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20160911—TASK 6
Listen to part of a lecture in an Astronomy class.
（掃描封底二維碼獲取該題聽力音頻）
Using points and examples from the lecture, describe two features that a location for building an ob...