长江干流的水能资源主要集中在（　　）

    I became lame（瘸的）in both legs in my childhood. I can't stand1 the support of two sticks. Only in my wheelchair can I “2”.

    I still remembered the first day at 3 .When I appeared at the door,4 in the classroom stared（凝视）at me in 5 .My face turned6 .I couldn't help7back.It was the8and sympathy（同情）in their eyes that9me doing so.I went shyly towards an unoccupied（空的）seat.

    Being lame,I didn't dare（敢）to10in front of my classmates.I was afraid that I might be  11at.In those days I was very sad to see others walking12.

    One day, a few students came up to me and asked me to go outside.I was really13They encouraged me with a(n)14 smile and15 me in my wheelchair from place to place.I was16 to them for giving me a chance to see the 17of our lovely school with my own eyes.

    After that we often read,played and talked together.My friends are always18to help me.It made me19I am handicapped（残疾的）.

    Once they asked me, “What is the most beautiful thing in our school?”Without hesitation（犹豫）I said,“It is the20.”

给划线字注音，根据拼音写汉字。
风骚       恪     尽职守   旁wù        吹毛求cī______

阅读材料，结合所学知识，回答问题： 
材料一  19世纪六十年代至20世纪初，中国近代化探索艰难起步，曲折前进。
材料二 有人说：1901年，中国陷入无尽的黑暗中；1911年，一道闪电划过，却黑暗依旧；1921年，中国终于迎来了曙光。
（1）中国近代化探索开端是哪一事件？
（2）材料二中“无尽的黑暗”、“闪电”、“迎来曙光”分别是什么历史事件？
（3）材料二中的三件大事对中国的影响分别是什么？
（4）据材料一归纳，中国近代化探索中向西方学习的内容有何变化？
（5）中国近代化探索艰难起步，曲折前进。它给我们什么启示？