We can use energy from the sun because _________. We can use energy from the sun because _________. 分类:理工类 题型:单选题 查看答案
根据下列短文,回答题。Visible light that produce warmth is an example o 根据下列短文,回答题。Visible light that produce warmth is an example of _________. 分类:理工类 题型:单选题 查看答案