—What should I do?

—_________ healthy, you should take more exercise.

—— It's getting late, Betty. ——Nearly __________. I'm doing a composition.

实验1：阔叶（雌）×窄叶（雄）→子代雌株全为阔叶，雄株全为阔叶

实验2：窄叶（雌）×阔叶（雄）→子代雌株全为阔叶，雄株全为窄叶

世界上信徒最多，流传最广的宗教是：（　　　）

某同学搜集到下列人物图片,欲将他们的贡献归纳到一个主题中。这个主题应是(    )