OnApril14，2010，abigearthquakehitYushuinQinghai．Buildingsfelldown．Manypeoplewerekilledorhurt．Soonaftertheearthquakehappened，soldiers，policeanddoctorsfromaroundthecountryrushedtoYushutohelpwithrescue（救

Question

On April 14，2010，a big earthquake hit Yushu in Qinghai．Buildings fell down．Many people were killed or hurt．Soon after the earthquake happened，soldiers，police and doctors from around
 the country rushed to Yushu to help with rescue（救援） work．But they did not have an easy time．
Yushu sits at about 4，000 meters above sea level．It is very cold there．The air is thin．Some rescuers got sick．They felt dizzy（头晕） and have trouble breathing．Some rescuers were serious-ly ill．At least 200 sick rescuers had to leave Yushu．
What caused their sickness？The sick rescuers had altitude sickness（高原反应）．
The higher a place is above sea level，the less oxygen there is in the air．This causes problems for people who live in lower place．These bodies aren't used to working on so little oxygen．
All kinds of people can get altitude sickness．But some people get altitude sickness easier than others．Most people can go up 2，483 meters without getting altitude sickness．
How to deal with altitude sickness？Some of the first signs of altitude sickness are headache，weakness，trouble sleeping and stomachache．Some people may have trouble breathing．
What should people do if they get altitude sickness？The best treatment for altitude sickness is to go down to a lower place right away．If it isn't serious，you can stay there and let your body adjust（适应）．But you should not exercise at all．
56．Some rescuers had to leave Yushu because___
A．they finished their work
B．they were hurt
C．they will ill
D．they had a hard time
57．What causes altitude sickness？___
A．Tiredness
B．an earthquake
C．Bad environment
D．Very little oxygen
58．All the following are the signs of altitude sickness EXCEPT___
A．headache
B．cold
C．stomachache
D．trouble breathing
59．If people get altitude sickness，they shouldn't do___
A．run fast
B．let their body adjust
C．walk slowly
D．go down to a low place
60．What's the story mainly about？___
A．The Yushu earthquake．
B．The rescue work in Yushu．
C．altitude sickness．
D．All kinds of diseases in Yushu．

Answer 1

56．C．细节理解题．根据"Some rescuers were seriously ill．At least 200 sick rescuers had to leave Yushu．"可知一些救援者离开玉树的原因是由于患了严重的疾病，不得不离开玉树，故选C．

57．D．细节理解题．根据"The higher a place is above sea level，the less oxygen there is in the air．"可知由于海拔高的地方，氧气含量少，导致的高原反应，故选D．

58．B．细节理解题．根据"Some of the first signs of altitude sickness are headache，weakness，trouble sleeping and stomachache．"高原反应的表现主要有头痛，虚弱，睡不着，肚子疼，可知除了感冒之外，其他几项都是高原反应的表现，故选B．

59．D．细节理解题．根据"The best treatment for altitude sickness is to go down to a lower place right away．If it isn't serious，you can stay there and let your body adjust（适应）．But you should not exercise at all．"可知得了高原反应之后要尽快到一个比较低的地方，不是很严重的话，你可以待在那里，让你的身体适应一下，但是不能锻炼，所以跑步是不正确的，故选D．

60．C．主旨大意题．本文主要叙述了参加玉树地震救援的人员有些患了高原反应，不得不离开玉树，然后分析了高原反应的原因，症状，以及应对措施．根据"The sick rescuers had altitude sickness"可知本文主要介绍了高原反应的有关内容，故选C．