A:green
B:black
C:white
—How was your day off during the Qingming Festival?
—Pretty good! We ____ (visit) Xu Xiaoxuan's former home.
人的受精卵开始分裂和发育的场所分别是 ( )
比较法是学习地理的一个重要方法,读俄罗斯和日本图回答问题。