B

    Running is becoming popular these days. Many of us run for our health. Doctors say many of the health problems come from these bad habits: eating too much, drinking too much, smoking, and not taking enough exercise. Doctors tell us, "Eat and drink less, don't smoke, and exercise more."

    Running is a good form of exercise because it helps build a strong heart. It also helps most people lose weight. One 68­year­old woman runs three times a week. She runs to lose weight.

    Running is good for health in other ways, too. Many runners say running keeps colds and other small health problems away." Running is my doctor, "says one man.

    Running can also help people to relax. So today men and women of all ages enjoy running.

The giant finds the children in his garden．He is very____．(sad／angry／hungry)

已知a＞b＞0，椭圆C₁的方程为$\frac{x^2}{a^2}+\frac{y^2}{b^2}=1$，双曲线C₂的方程为$\frac{x^2}{a^2}-\frac{y^2}{b^2}=1$，C₁与C₂的离心率之积为$\frac{\sqrt{3}}{2}$，则C₂的渐近线方程为（　　）

读课文《热爱生命》，文中的中心人物是“他”，还有一个人物始终没有出现，请你说一说作者这样的安排有什么用意。