Sarah ran in, shouting, “Look what I found!”  Over the top of the paper I was reading; came a terrible thing that caused me to jump. It was a snake skin found in our garden.
“Isn’t it beautiful?” said my seven-year-old daughter.
I opened my eyes widely and looked at the snake skin in fear（恐惧地）. I didn’t think it was beautiful, but I learned never to appear nonchalant(冷漠的)with children. Everything they see for the first time is important to their sense of beauty; they see only excellence in the world.
“Why does it do this?”  Sarah asked.
“Snakes shed(蜕) their skins because they need to renew themselves,”  I explained.
“Why do they need to renew（使更新） themselves?” Sarah asked.
“We often need to shed our skins, those coatings that we cover ourselves with,” I said to my daughter. “We leave some things and find other thing unwanted or unnecessary. This snake no longer needs this skin. It is probably too little for him, and he probably doesn’t think he looks as smart in it as he once did. ”
As we talked, I knew that she began to understand. Although she couldn’t understand clearly, she would know that renewal is part of progress; that we need to take a good look at ourselves, our rooms, schoolwork and spirit, and see what we need to keep and what we need to leave.  I was careful to tell that this is a natural way, not one to be forced.
“Snakes don’t peel off their skins when they like them. “I explained. “It happens as a natural thing of their growth. ”
“I see, Dad,” said Sarah as she held the snake skin, and then ran off.
I hoped she would remember this; we need to throw some away because they are worthless or unnecessary. Then we can store them as memories in our deep hearts.
【小题1】Father jumped up when her daughter came to him with a snake skin because ＿＿＿＿＿＿.

China has marked its National Winter Swimming Day. Many swimming lovers in the north of the country celebrated it on January 1^st.

Winter swimming is a physical training. During it, you can have a cold wind bath, an icy water bath and a sunbath at the same time in the open air of winter.

When you have taken off clothes, all parts of your body are awakened by the cold. You may feel like going into the water, but a warm-up exercise is a must before jumping into the freezing water.

You go into the cold water and swim. The only thing you think about in the cold water is how to withstand（承受住）the cold. At this moment, your brain is relaxed and at rest. Then you come out just when your hands and feet are beginning to feel freezing.

After you get dried, your pink-colored skin is bathed in the winter sunshine. Slowly, you no longer feel cold. After the “three baths” of air, water and sun, you will feel warm, relaxed and comfortable.

Winter swimming is a way to keep fit. Many people find it a difficult sport, while its lovers say the sport makes them stronger. But it may not be fit for everyone. Before you decide to try, make sure you check you’re in good physical condition to do such a brave sport.

50. When you are swimming in the cold water, your brain is ______.

　 A. relaxed　　　　 B. fresh　　　　　　　　　　　 C. active　　　　　　　 D. slow

51. After winter swimming, you will feel ______.

　 A. full　　　　　　　　　　 B. healthy　　　　　　　　　　 C. freezing　　　　　　　　　 D. comfortable

52. To take part in winter swimming, you must ______.

A. enjoy cold wind bath 　　　　　　　　　　 B. receive special training

C. check your physical condition　　　　　 D. take warm-up exercise every day