色盲病是一种色觉缺陷病．色盲基因b是隐性基因，正常基因B是显性基因，它们都位于X染色体上．如图是一家三口遗传图谱，则孩子（3号）和孩子母亲（2号）的基因型分别为（    ）

一国人口生育率的迅速下降在造成人口老龄化加速的同时，也将导致少儿抚养比例迅速下降，劳动年龄人口比例上升。在老年人口比例达到较高水平之前，将形成一个劳动力资源相对丰富、抚养负担轻、对经济发展十分有利的“黄金时期”，这一现象被称为“人口红利”。

材料二：随着综合国力的提高，我国外交从建国初的“一边倒”演变到“构建人类命运共同体”，诚如***主席说过“只有各国共同发展了，世界才能更好发展。那种以邻为壑、转嫁危机、损人利己的做法既不道德，也难以持久。”我国从建国初期的“一穷二白”，经历十二个五年规划，发展到全世界第二大经济体，也越来越意识到中国的世界责任，在世界秩序中发出越来越多的中国声音。9月3日，在纪念中国人民抗日战争暨世界反法西斯战争胜利70周年阅兵式上，***主席宣布中国将裁军30万；在9月26日联合国发展峰会上，宣布设立南南合作援助基金，首期提供20亿美元;在9月27日全球妇女峰会上，向联合国妇女署捐款1000万美元，落实2015年后发展议程相关目标。

厨房中蕴藏着许多化学知识．

    It was the afternoon when we closed on our new house, and I was in the garage (车库). I 1 a part of blanket sticking out of the ceiling; that was 2 I pulled on it, and a way to the attic (阁楼) suddenly3 I climbed a ladder and headed up.

    I climbed into a space 4 the garage that was separated from the rest of the attic. As my eyes adjusted (适应) to the dark, I saw a metal container that I 5as a World War II ammo (弹药) box; my grandfather used to store 6used on his farm in this ammo boxes. I opened the cover and was 7 at what I saw: a lot of money 8 up in orange rope. God, I've found, like $800!

    But there was more than one box of9 I found another seven boxes10to the edge, plus two big black dustbin bags full of money.11 about $45,000. In my attic, I won't lie, my first 12 was that this was a 13 from God—the money to 14 this old house and to make life15for our two young sons. But I 16 that the right thing I should do was to17the money to the former owners. So I called them and asked them to come.

    They were18 of course, not only about the money but that I was returning it. They had recently 19 over the house and said it must have been their dad who had20 the money.