Recently, I felt like I reached a very low point in life. My relationships weren't good, I wasn't enjoying my classes, and I felt like I had nothing to1.My life seemed to be full of endless homework, tests and loneliness. Nothing anyone said seemed2o me. I wasn't sure what to do about myself. All I wanted was to be happy again, but I didn't know who or what would3that.

    During these days, I had trouble sleeping. I had to take sleeping pills but still woke up in the midnight. I had no4but to tell my dad. He5the book The Secret. I immediately bought the e-book online and read the whole thing that night. I'm6quite a stubborn person, but the effect on my mood after finishing the book was7. Suddenly, I felt like life was beautiful again. I had never felt such a deep and quick8in my life before.

    In fact, the book's message was very simple—think positively(积极地).The book had many success stories about how people were able to9money, soul mates(心灵伙伴)and old friends back into their lives. I started learning to thank everything in my life like them. Little by little, I realized that The Secret could only work10I believed these people's success stories.

    Now I'm sure I can bring myself happiness.

下列函数中，自变量x的取值范围是$x\ge 3$的是（      ）。

如图所示，有一矩形区域abcd，水平边长s= $\sqrt{3}$ m，竖直边长h=1m．当该区域只存在大小为E=10N/C、方向竖直向下的匀强电场时，一比荷为 $\frac{q}{m}$ =0.1C/kg的正粒子由a点沿ab方向以速率v₀进入该区域，粒子运动轨迹恰好通过该区域的几何中心．当该区域只存在匀强磁场时，另一个比荷也为 $\frac{q}{m}$ =0.1C/kg的负粒子由c点沿cd方向以同样的速率v₀进入该区域，粒子运动轨迹也恰好通过该区域的几何中心．不计粒子的重力，则（   ）

图①、图②都是6×6的正方形网格，每个小正方形的边长均为1，每个小正方形顶点叫做格点，点A、B、C都在格点上，按要求完成下列画图．