Do I like to shop? Of course!  It's fun. Whenever I have free time, I go shopping. There is always something to buy—shoes, clothes, bags, books, etc.

                                                                      --Eileen

    I'm always shopping for my two daughters. Delia, my two-year-old daughter, often needs clothes or shoes. Jodie, my ten-year-old daughter, needs things for school. Do I ever shop for myself? Who has time? Is it fun? No way!

                                                                         Jane

    I don't care about clothes and luckily, I don't need to shop for my food. The only kind of thing I need to buy myself is about music.

                                                                         Nigel

    I like spending my flee time on something fun. To me, shopping is a necessity, not a pleasure (乐趣). I would like to dance, talk with my friends or play chess in my free time. I only shop when I have to.

                                                                         Louis

根据材料内容选择最佳答案。

目前认为岩浆的主要发源地之一是（　　 ）

偶函数f(x)在0,+$\infty$)上为增函数，若不等式$f(ax-1)<f(2-x^2)$对$x\in R$恒成立，则实数a的取值范围为(   )