“剑外忽传收蓟北，初闻涕泪满衣裳”中的“忽传”二字表现出什么，诗人“涕泪”是因为什么？

在数轴上画出表示下列各数的点，并把它们按从小到大的顺序用“＜”连接起来：

﹣3，3.5，0，﹣$\frac{7}{2}$，﹣4，1.5．

某市未成年人管教所对在押的少年犯进行调查的数据显示，在押的少年犯中，有打架行为的占57.9%，有旷课行为的占48.9%，经常光顾网吧的占44.9%，有赌博行为的占44.3%，看过黄色书籍和淫秽影像制品的占31.9%。这说明 （   ）

   People are often killed while c____  the road. Most of them are old people and c____ . Old people are often killed because they are careless. People should look and listen b____  they cross the road. A car, a truck or a bus can't stop very q____ if it is going very fast. It will travel many meters before it s____ . Pedestrian(行人)don't know this. They think that a car can stop right away. It is h____ for a pedestrian to know how fast a car is traveling. The only s____ way to cross the road is to look at b____ ways, right and left. The correct way to cross the road is t____  walk quickly when the traffic l____ turn green.

—Mary looks hot and shy.

—So _______ you if you had a high fever.