It’s a challenge for people to live in very cold weather. We do not have animal fur to help us keep warm! We can make clothes and build houses to keep warm!
In winter, you must be careful. If you get stuck (受困) outside for a long time in very cold weather, you may feel difficult to move your body. So what can you do to stay warm?
First, find a big pile of snow and then dig a cave (洞穴). Make it big to keep air inside.
Second, climb into your cave. Before you climb inside, clean the snow on your clothes. The heat(热量) from your body will stay inside the cave. This is good! But if there’s much snow on your clothes, the snow will melt (融化). This is bad. Wet clothes will take the heat away from your body!
Third, try to make the floor of the cave higher. This will keep the sleeping area warm when the cold air goes into the cave.
Next, fill up the door hole (洞) with snow. This way, the heat will not get out.
Finally, if you can, share your cave with a friend. Two people make more heat than one person can.
【小题1】Which of the following things can help keep warm in very cold weather?①houses ②clothes ③animal fur ④air ⑤cave ⑥shorts
| A．①③④ | B．②③⑥ | C．①②⑤ | D．④⑤⑥ |
| A．cave | B．house | C．snow | D．clothes |
| A．clean the snow on your clothes after climbing inside |
| B．wear wet clothes after climbing inside |
| C．try to make the floor of the cave lower than door hole |
| D．share your cave with a friend |
| A．how to dig a cave | B．how to keep warm alone |
| C．how to get more heat | D．how to be careful |
| A．newspaper | B．cookbook | C．science book | D．travel program |
