已知区间D⊆0，2π，函数y=cosx在区间D上是增函数，函数y=sinx在区间D上是减函数，那么区间D可以是（　　）

如图的温度计是测量 ____用的温度计，温度计的测量范围是 ____

（Ⅰ） 写出直线l普通方程和曲线C的直角坐标方程；

（Ⅱ） 过点M（﹣1，0）且与直线l平行的直线l₁交C于A，B两点，求|AB|．

    Earthquakes may take place anywhere on the Earth's surface.1,they are most probably to happen near mountains.

    During an earthquake,the Earth's surface shakes.Houses fall,people are killed or injured,and2wholecities are destroyed.

    But we can do something to protect3against earthquakes,Scientists have made maps4the “earthquake belt”.In the belts,earthquakes are likely to happen.In these areas we can build 5houses to resist(抵抗）earthquake shocks.

    In the future,scientists will be able to predict exactly6earthquakes will take place.Then they can tell people to take measures.Thus lives can be saved and damage（损失）can be 7.