阅读材料回答问题

小刚在班里是个独来独往的人，他认为自己既没有做错事，也不有求于人，因此没必要去和别人交往。可是后来，他渐渐地觉得自己越来越孤独，看到同学在一块有说有笑，他又不由得既羡慕又嫉妒，希望自己能融入同学中去，成为他们中的一员。但是不知为什么，他总觉得与别人格格不入，似乎别人也不喜欢同他说话。为此，他开始沉迷于网络，经常上网，在“微信”“陌陌”“米聊”上终日与网友聊天。

①千里之行，始于足下

②质量第一，安全第一

③打破传统，开拓进取

④人无我有，人有我优

通读下面短文, 掌握其大意, 然后在每小题所给的四个选项中, 选出一个最佳答案, 并将答题卡上对应的选项涂黑。

    My parents are busy with their work every day. You can't see there is love 1 them. They don't act in the romantic（浪漫的）2that I read in books or I see on TV.

    One day, while Mom was sewing(缝) a quilt，I 3 beside her. “Mom, I have a question,” I said after a while.

    “What?” she asked.

    “Is there love between you and Dad?” I asked her in a very low voice.

    She stopped sewing and 4 her head. Then she bowed her head and went on sewing.

    I thought I had hurt her. At last I heard my mother say， “Susan, look at this thread（线）. Sometimes it appears, but most of it disappears in the quilt. It makes the quilt5. If life is a quilt, then love should be a thread. It can hardly be seen, but it's 6 there.”

    I couldn't understand her 7 the next spring. My father suddenly got sick. Mom had to stay with him in the hospital for a month.

    After they 8, my mother helped my father walk slowly down the country road every day. My father had never been so gentle.

    “Dad, how are you 9 now?” I asked him one day. “Susan, don't worry about me,” he said. “I just like walking with your Mom.”

     Once I thought 10 meant flowers, gifts and sweet kisses. But from this experience, I understand that it is just a thread in the quilt of our life . It is inside, making life strong and warm.

若直线mx+2ny-4=0$\left(m,n\in R,m\ne n\right)$始终平分圆$x^2+y^2-4x-2y-4=0$的周长，则mn的取值范围是(　 　)

阅读下面这首宋词，完成下列小题。

                                                                                               八声甘州

                                                                                                              辛弃疾

          夜读《李广传》，不能寐。因念晁楚老、杨民瞻^①约同居山间，戏用李广事，赋以寄之。

          故将军饮罢夜归来，长亭解雕鞍。恨灞陵醉尉，匆匆未识，桃李无言。射虎山横一骑，裂石响惊弦。落魄封侯事，岁晚田间。

          谁向桑麻杜曲，要短衣匹马，移住南山？看风流慷慨，谈笑过残年^②。汉开边、功名万里，甚当时、健者也曾闲。纱窗外、斜风细雨，一阵轻寒。

注：①杨民瞻，辛弃疾的友人。②杜甫《曲江三章》其三：“自断此生休问天，杜曲幸有桑麻田，故将移住南山边。短衣匹马随李广，看射猛虎终残年。