Maybe you know floods, earthquakes, sandstorms and so on. But have you heard of typhoons?T

Maybe you know floods, earthquakes, sandstorms and so on. But have you heard of typhoons?
Typhoons are some of the worst storms, usually around the Pacific Ocean and the South China Sea. Most happen in July, August and September.
How does a typhoon happen? When lots of sea water gets hot in the summer sun, it evaporates （蒸发）into the air. This makes the air hotter. When the air gets warm enough, it starts to move higher up into sky. Then cooler air around it rushes in. It fills the space that is left. After the air gets warmer, it starts to move quickly, making wind. The wind goes in circles（圆圈）and it keeps moving higher in the sky. The warmer the air gets, the quicker the wind moves. And when the wind moves faster than 30 metres a second, a typhoon begins.
A typhoon has two parts, one is called the “eye”. In the eye, the wind does not move so fast. The other part is the wall of clouds around the eye. Here are the strongest winds and hardest rains.
Typhoons are very dangerous. In November this year, Typhoon Haiyan killed 5500 people in Philippines. More people are missing.
What to do when a typhoon hits?
Stay inside. Close all the windows and stay away from them.
Try to bring all of your things inside. Strong winds could even blow away your bikes!
Listen to the radio or TV for important information.
If you’re told to go to a safer place, do it right now.
【小题1】This passage is most probably from . A．an advertisement of a typhoonB．a travel recordC．a weather report D．a science magazine【小题2】Typhoons often happen .A．in the hot seasonB．in the cold seasonC．only in ChinaD．under the sea【小题3】In which order（顺序）does a typhoon happen?
a. The wind moves fast enough, a typhoon starts.
b. The air moves quickly, making wind.
c. The sun makes sea water hot.
d. The air gets warmer.A．d-c-b-aB．c-d-b-aC．c-d-a-bD．d-b-a-c【小题4】Which of the following is TRUE according to the passage?A．The warmer the air gets, the slower the wind moves.B．5500 people died because of Typhoon Haiyan around the world.C．The strongest winds and hardest rains are in the wall of clouds. D．A typhoon will not happen before the wind goes faster than 30 km a second.【小题5】When a typhoon comes, we CANNOT .A．close all the windowsB．listen to typhoon newsC．stay inside the strong houseD．go outside to find a safer placeD

(答案→)D 解析：这篇短文主要为我们讲述的是什么是台风，台风是怎样形成的，以及发生台风的时候我们应该怎么办。故这样的一篇文章应该是来自于一本科学杂志。而不是广告，旅行记录或天气预报。【小题1】主旨大意题。这篇短文主要为我们讲述的是什么是台风，台风是怎样形成的，以及发生台风的时候我们应该怎么办。故这样的一篇文章应该是来自于一本科学杂志。而不是广告，旅行记录或天气预报。故选D。【小题2】推理判断题。根据文章中Most happen in July, August and September.可知，大多数的台风发生在7、8、9月份，且通过文章第三段作者对台风形成的原因的分析，我们可知，台风多发生在热的季节。故选A。【小题3】细节理解题。根据文章第三段先是When lots of sea water gets hot in the summer sun, it evaporates into the air.太阳使海水变热，然后This makes the air hotter使得空气变热，接下来it starts to move quickly, making wind热空气快速的流动，形成风，最后when the wind moves faster than 30 metres a second, a typhoon begins当风速超过每秒钟30米的时候，就形成了台风。故选B。【小题4】细节理解题。根据文章中The other part is the wall of clouds around the eye. Here are the strongest winds and hardest rains另一部分是在风眼附近的云墙，这里风最大，雨最强。故选C。【小题5】细节理解题。文章的最后一部分给了我们一些建议，当发生台风的时候我们应该怎么办，其中第一条就是Stay inside.，呆在屋里面，不能外出，故D选项的表述是不对的。故选D。

我明天再问问老师，叫他解释下这个问题