Here in Siberia（西伯利亚），the winter is always very long and it's very，very cold! It starts to snow in November and the snow won’t leave until May．The temperature is usually about-25℃，but it's sometimes much colder．When it's-35℃, children can’t go to school，but adults still go to work! We wear a lot of warm clothes，socks and boots（靴子），sweaters and fur coats．All the houses have heating（暖气），so it is never cold inside．In winter, we close all the windows to stop the wind from getting in and we don’t open them again until spring．

In spring and summer it rains a lot, and we don’t open see the sun．In summer it’s often about 25℃，but the weather’s very changeable（可变的；易变的）．One day it's 25℃, and the next day it’s 10℃．People say that the weather was even colder in the past．

1．How long is Siberia’s snowy time?

2．What are used in Siberia to keep the people and houses warm?

3．Do children go to school when it’s-35℃in winter?

4．What’s the weather like in spring?

5．How does the weather in Siberia often change（变化）in summer?

完形填空

　　When a group of people work together to reach the same goal, they make up a team. Teamwork is very important as men try to learn more about the world in which we 1 .

　　In 1957, a team of eighteen men from the United States 2 the winter at the South Pole. They were there 3 the secrets of the earth and the sky.

　　The South Pole is at the bottom of the world. During its winter, the sun 4 rises. The men had to face the darkness of a six-month night, as well as the world's worst 5 .

　　The men lived in a group of buildings joined together by tunnels(隧道). They were cut off from the rest of the 6 . During the long winter, they could not be reached even by plane.

　　The men depended on one 7 for company. Everyone took turns working in the “snow mine”. This was the giant cave dug into the ice beneath their camp. There, they dug out 8 snow needed as a water supply.

　　Each man also had his own important job to do. There was a cook and a doctor. There were scientists and men 9 were trained in other jobs. Working together, they proved that men can live and work 10 the South Pole.

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