阅读课文《司马迁发愤写<史记>》片断，完成练习： 

     正当他专心致志写作《史记》的时候，一场飞来横（héng  hèng）祸突然降临到他头上。原来司马迁因为替一位将军（辩护  辩论），得罪了汉武帝，入狱受了酷刑。司马迁悲愤交加，几次想血溅墙头，了此（一生  残生），但想到《史记还没有完成，便打消了这个念头。他想：“人总是要死的，有的重于泰山，有的轻于鸿毛。我如果就这样死了，不是比鸿毛还轻吗？我一定要活下去！我一定要写完这部史书！”想到这里，他尽力克制自己，把个人的耻辱、痛苦全都埋在心底，重（zhòng  chóng）又摊开光洁平滑的竹简，在上面写下一行行工整的隶字。

从本段文字中可以看出，司马迁之所以能够活下去，从逆境中走出来，是因为他知道什么？

阅读下面短文，从短文后各题所给的四个选项（A、B、C和D）中，选出可以填入空白处的最佳选项。

    I live in a big city with a lot of homeless(无家可归的) people. Luckily there're small ways of helping them and you needn't have a lot of  1.  

    One way to help is to buy their monthly magazine. 2 doing this one day, I got to 3 a young homeless man, He was often  4 the magazine at the train station.

    He was a poor farmer from another country. After a while, I found that his 5 was close to mine. It  6 that we were born in the same month.

    I met him last year 7 after his birthday, and after congratulating him, without 8, I asked if he had had a good day. He 9 and said he hadn't really celebrated. I felt so 10.

    I just couldn't think of this nice, young man being 11 on his 25th birthday with no presents, no cake, nothing! So I went home and looked in my yarn（纱线） basket. 12 for me, I had enough yarn 13. I set to work and knitted（编织） a 14 for the young man. The yarn had become a little dirty  15 I didn't knit very often. Then I washed the yarn so the scarf would be 16 when he got it.

    I met him on my own birthday as I was going shopping. I had 17 to meet him so I had 18 the scarf and a piece of my own birthday 19 around with me. He was very happy with these gifts and so was I. The 20 in his eyes was the best present he could have given me!