I am a long distance runner. When I was thirty-one, I was in a serious car accident. The d

I am a long distance runner. When I was thirty-one, I was in a serious car accident. The doctor told me that they would try to get me to walk “normally” but I would never run again—terrible news for someone who views running as the oxygen(氧气) she breathes. The doctors were right. For the next nine and a half years, I was unable to run more than twenty-five feet.
In 2006, I began self-training to take part in a 60-mile walk. Three months into preparing, I realized that walking 4-5 hours a day was too long. If only I could jog(慢跑) part of it—that would cost me less time. I started jogging without my knees aching. Slowly, I increased the distance. The doctor were proved wrong—it only took nine and a half years to do so.
While practicing, I suffered a loss—a dear friend suddenly died. His work had been to help women to accept themselves and reach their fullest potential(潜力). He believed that people should let nothing hold them back from achieving their goals. Soon after his death, a crazy thought entered my mind: what if I could run the LA Marathon? I knew that if I didn’t train to my fullest, the doctor would win. So I trained seven days a week. And I succeeded in crossing the finish line of the LA Marathons all over the United States to the astonishment of my doctors. They never believed that I would achieve that.
The aches and pains I experience while training and racing are nothing compared to the suffering people whom I respect must accept.
【小题1】What can we learn about the author from Paragraph 1?A．She didn’t believe what the doctor said.B．She often felt it was hard to tolerate.C．She loved running very much.D．She lost heart after the accident.【小题2】The author tried jogging because she wanted to .A．save some timeB．protect her feet C．get more exerciseD．catch up with others【小题3】Why did the author decide to join in the marathon?A．Because she was so sorry for the loss of a friend.B．Because she was encouraged by her dead friend’s words.C．Because she wanted to prove the doctors were wrong.D．Because she wanted to make more friends.【小题4】What does the underlined word “astonishment” in Paragraph 3 mean?A．Surprise.B．Sadness.C．Disappointment.D．Anger.C

(答案→)C 解析：本文讲述了遇见事故残疾了的我通过个人努力，又一次参加了马拉松长跑，证明只要努力，一切都有可能。【小题1】C 推理题。根据第一段3,4行I would never run again—terrible news for someone who views running as the oxygen(氧气) she breathes.说明我把跑步当成是呼吸的氧气，说明我很重视跑步，故C正确。【小题2】A 细节题。根据第二段2,3行If only I could jog(慢跑) part of it—that would cost me less time.说明这样做可以省略时间，故A正确。【小题3】B 细节题。根据第三段3，4,5行He believed that people should let nothing hold them back from achieving their goals 。Soon after his death, a crazy thought entered my mind: what if I could run the LA Marathon? I knew that if I didn’t train to my fullest, the doctor would win说明我受到他的话的鼓励，故B正确。【小题4】A 推理题。根据And I succeeded in crossing the finish line of the LA Marathons all over the United States to the astonishment of my doctors. They never believed that I would achieve that.说明医生根本想不到我能做到这一切，这让医生非常惊讶。故A正确。

和我的回答一样，看来我也对了

正好我需要

D解析分析：（1）若箱子处于静止或匀速直线的运动状态时，此时在水平方向上，该同学对箱子的拉力等于箱子所受的阻力；（2）若箱子处于非平衡状态，即箱子处于加速运动状态，即此时该同学对箱子的拉力大于箱子所受的阻力；若箱子处于减速运动状态，即此时该同学对箱子的拉力小于箱子所受的阻力；解答：在该题中，只是说“该同学拉着旅行箱在路上急速走”，并没有确切的指出该箱子是处于那种运动状态，所以此时箱子所受的拉力与其自身阻力的大小关系不能确定．故选D．点评：该题考查了同学们对物体处于何种状态时的受力情况的理解，物体在水平方向上受两个力的情况下，若物体处于静止或匀速直线的运动状态时，此时在水平方向上，对物体的拉力等于物体所受的阻力；若物体处于非平衡状态，即若物体处于加速运动状态，即此时对物体的拉力大于物体所受的阻力；若物体处于减速运动状态，即此时对物体的拉力小于物体所受的阻力；