问题补充：
Passage 5
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 grown-ups still go to work! We wear a lot of warm clothes: socks and boots, sweaters and fur coats. All the houses have heating, so it’s never cold inside. In winter, we close 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 often see the sun. In summer it’s often about 25℃, but the weather is very changeable. One day it’s 25℃, and the next day it’s 10℃. People say that the weather was even colder in the past.
【小题1】How long is Siberia’s snowy time?
【小题2】What are used in Siberia to keep the people and houses warm?
【小题3】Do children go to school when it’s -35℃ in winter?
【小题4】What’s the weather like in spring?
【小题5】How does the weather in Siberia often change in summer?For six months
答案：
(答案→)For six months
解析：
【小题1】结合It starts to snow in November and the snow won’t leave until May可知答案
【小题2】结合We wear a lot of warm clothes: socks and boots, sweaters and fur coats. All the houses have heating可知答案
【小题3】结合When it’s -35℃, children can’t go to school,可知答案
【小题4】结合In spring and summer it rains a lot可知答案
【小题5】结合but the weather is very changeable. One day it’s 25℃, and the next day it’s 10℃. People say that the weather was even colder in the past.可知答案
