题目

How to be a fit kidEveryone wants to be fit. If you’re fit, your body works well, feels good, and can do all the things you want to do, like running around with your friends. If you want to be a fit kid, here are some rules you must follow.【1】 You may have a favorite food, but the best way is to eat differently. If you eat different foods, you will never feel tired. Taste new foods and old ones. Eat at least five kinds of fruits and vegetables a day---two fruits and three vegetables.【2】 When you feel full, you must stop eating. Eating too much can make you feel uncomfortable and get 读世界局部区域不同时间沙尘空间分布图，回答18—20题 1.造成该区域沙尘扩散的主要因素是 A．副热带高压     B．信风     C．西风           D．季风 2.当沙尘扩散如甲所示时，最可能的时间是 A．1月       B．4月      C．7月       D．10月 3.图示沙尘扩散，可能造成的影响是 A．墨西哥湾沿岸诸国年降水量减少           B．亚马孙河含沙量剧增 C．美国东南部大气悬浮颗粒物增加           D．巴西高原干旱程度加剧