在地球仪上，有关经线与纬线的说法，正确的是（　　）

    Hi, I'm Brian. This is the photo of my family. My grandfather is wearing(戴着) glasses. He has little hair. The one next to him is my uncle. He is wearing a cap. My grandmother has gray hair. She is a kind woman. She is holding(抱着) my younger brother. He has short hair. The woman standing behind me is my mom. She has brown hair. There is a little girl sitting on the table. Her name is Cathy. She is my sister. She is wearing a green T-shirt and a pair of green socks. It's her favorite color. Which one is my father? Well, he is wearing glasses, too. He is in brown shorts and brown shoes. His name is Sam. Now, do you know where he is?

《新全球史》载：在古典时代，一些个人也完成了长途旅行，张骞历尽艰险从长安到达了遥远的西方，张骞“长途旅行”的主要目的是（    ）

如图所示，凉铁板上出现了大量的小水滴，小水滴是由壶嘴喷出的水蒸气____ 形成的；要在铁板上产生更多的水滴，可以采取的措施有：____ ．高烧病人用冰袋降温是利用了____ ．