题目

对任意函数f(x)、g(x)在公共定义域内规定若f(x)=3-x,g(x)=,则F(x)的最大值是________________. 答案：解析：F(x)的含义取f(x)、g(x)中的最小者，画出f(x)、g(x)的图象，当x=2时，F(x)max=1.答案：1Once out of the earth’s gravity, the astronaut is________ by the problem of weightlessness. A．affected B．effected C．related D．offered