According to a Chinese saying, he who doesn't reach the Great Wall of China is never a great man.

    Growing up in Beijing I1 its historical sites and natural attractions perfectly well. However, I'd 2 climbed the Great Wall before until recently. I, along with my friends3for the top. We soon discovered that the hike was much more 4 than we had imagined. But we didn't 5.It took us about two hours to finally6 where we had wanted to get to.

    As I 7 at the top of the Great Wall, I looked back at the waves of8 walking to the top. At that moment, I saw an amazing 9 that would forever change my opinion on humans' limits. I saw young couples carrying their children, walking10 but surely towards the top. They would stop once in a while to take a11 under the hot sun.

    As I stood there, I began to 12 words that can describe us humans. If one would like to describe Giraffes (长颈鹿), he/she would use words such as 13 and long-necked -But what about us? I took another look down below and my 14began to gather, persevering (坚持不懈的), determined, and 15As these words came into my mind, I 16 that it was not appearance or physical characteristics that should define (定义) us humans, but the 17 that we share.

    I don't know if I became a 18 man after returning from this 19 according to the Chinese saying20 I surely returned as a more thoughtful person.

等腰三角形可以分为____ 、____ 、____ 。

依次填入下列各句横线处的成语,最恰当的一组是（    ）

①青年人难免产生一时的疑惑、彷徨、失落，但只要把握好思想的总方向,善于分析,正确抉择,就能在正误、真假、善恶、美丑面前    。

②网络本身的虚拟性会导致其反映的某些情况存在夸大成分,因此,要想做到    ,必须亲自走到基层一线,看看、问问、坐坐、聊聊,这样才能看到网上所看不到的东西。

③南开大学通过学校官方网站公布了该校2014年本科招生录取结果,罕见地晒出了全部的录取名单,不同地区招生名额差异、考生成绩排序等信息在这份大名单上    。

如图，在运动员接球过程中体现了力既可以使物体的____发生改变，又可以使物体的____发生改变；网球对球拍的压力是由于____(“网”、“球”)发生弹性形变而产生的。