2010-2011学年度上学期安徽新课标高一数学必修1测试题

第Ⅰ卷(选择题　共60分)

一、选择题(本大题共10小题，每小题5分，共60分)

1.已知A={x|y=x,x∈R},B={y|y=x²,x∈R},则A∩B等于

A.{x|x∈R}                                                      B.{y|y≥0}

C.{(0,0),(1,1)}                                                       D.

2.方程x²-px+6=0的解集为M,方程x²+6x-q=0的解集为N,且M∩N={2},那么p+q等于

A.21                                   B.8                              C.6                              D.7

3. 下列四个函数中,在(0,+∞)上为增函数的是

A.f(x)=3-x                                                       B.f(x)=x²-3x

C.f(x)=-                                                        D.f(x)=-|x|

4.函数f(x)=x²+2(a－1)x+2在区间(-∞,4］上递减,则a的取值范围是

A.［-3,+∞］                                                  B.(-∞,-3)

C.(-∞,5］                                                       D.［3,+∞)