I'm a middle school student from America. I live far away from my school. So I often go to school by bus. It takes me about twenty minutes from my home to school.

    But at my school and other schools in our town, there is a "Walk to School Day". It is on Wednesday every week. On that day, parents send their kids to a bus stop. There are many bus stops in our town. At each bus stop, two adults lead us to walk to school together.

    "Walk to School Day" stops us taking cars or buses. That is good for the air and we can get exercise too. On the way to school, we talk to each other. We can also make new friends. I like "Walk to School Day". I walk about five kilometers with other students on that day. Our school will give some students beautiful backpacks if they do well. And I got one last year.

***在庆丰包子铺就餐,被网友在微博上发布后,引来如潮跟帖和好评点赞。这是因为(　　)

①作为国家领导人,理应特殊招待

②国家领导人日理万机,不应排队点餐,亲自取餐

③***给全党上了一堂生动务实的“廉洁公开课”“亲民公开课”“为官公开课”

④人们从***身上看到了勤俭节约、艰苦奋斗的优良传统

斯里兰卡是一个以热带季风气候为主的岛国，其国土面积为65610平方千米，森林覆盖率达30%．塔里木盆地主要气候类型是温带大陆性气候，土地面积为530000平方千米．读斯里兰卡（图1）和我国塔里木盆地（图2）地理简图

图2中，阿克苏地区的苹果果肉细腻，咀嚼后果味浓郁、基本无残渣，且糖分含量高．其主要原因是（    ）