基因突变是指DNA分子中发生的碱基对的替换、增添和缺失而引起的基因结构改变，关于这种改变的说法正确的是
①若发生在配子形成过程中，将遵循孟德尔遗传规律传递给后代；
②若发生在体细胞中，一定不能遗传；
③若发生在人的体细胞中有可能发展为癌细胞；
④都是外来因素影响引起的

如图，三视图描述的实物形状是（　　）

下列景观图片与地理区域搭配最有可能的是（  ）

    Hello, I'm Helen. I'm twelve years old. I'm in Garden Primary School. Jane is my classmate. We're good friends. I've got a green bicycle. It's new. I often ride the bicycle to go out and play. Today is Sunday. Jane and I go to visit Aunt Wang by bicycle. She lives in Pudong. She works in a hospital. She likes to make sick people better. She works very hard. It's 5: 45 now. It's dark outside. We must say goodbye to Aunt Wang.

《国语•晋语》中记载，晋国范中行氏的子孙，因避祸逃亡出国，“将耕于齐”，自耕而食。有人就大加指责，说不该将祭祀的牲畜用来耕地。材料主要反映了