2009年以来，我国液晶电视出货量猛增，价格大幅下跌，液晶电视销量大增。这说明 ①价格与供求之间存在相互影响、相互制约的关系②生活必需品的需
In 1816, there were no schools for the deaf in America. Several people started a few schools, but in the end all of the schools closed. There were too many problems. The first people to succeed wer
the bus we looked forward to arrived, forty minutes late. A．In the first place B．As a whole C．At length
根据原子结构和元素周期律，回答：116号元素处于周期表第_____ __周期，第_____ __族；原子核外有_____ ____个电子层，最外层有_____ ____个电子；它是_____ __
补写出下列名句名篇中的空缺部分。（只选3小题） 19． ， 。已而！已而！今之从政者殆而！（《论
双曲线-=1与直线y=kx-1只有一个公共点，求k的值.
(1)已知f(+1)=x+2,求f(x);(2)已知f(x)满足af(x)+f()=ax(x∈R且x≠0,a为常数,且a≠±1),求f(x).
的值域是__________
