You can visit Zhalong Nature Reserve, one of the few places on Earth _____ red-crowned cranes still live.

At present, one of the best ways to study is working in groups.—More chances _______ to students to learn from each other.

The reason why I burst into tears is _________ I don’t want to part with my mother　　　　　

If you don’t want to fall behind others, you must _____ current events.[ ]

依次填入下面这段文字横线处的语句，衔接最恰当的一组是达·芬奇的《蒙娜丽莎》成功地塑造了资本主义上升时期一位城市中产阶级妇女形象。 ，不少美术史家称它为“神秘的微笑”。①特别是微翘的嘴角和舒展的笑肌②画家以高超的绘画技巧，展现了这位女性脸上掠过的微笑③画面中的蒙娜丽莎呈现着微妙的笑容，眉宇间透出内心的欢愉④据记载，蒙娜丽莎是佛罗伦萨一位皮货商的妻子，当时年仅24岁⑤这正是古代意大利中产阶级有教养的妇女特有的矜持的美好表现⑥使蒙娜丽莎的笑容平静安详而又意味深长