Humans and many other mammals have unusually efficient internal temperature regulating systems that automatically maintain stable core body temperatures（核心体温）in cold winters and warm summers. In addition, people have developed cultural patterns and technologies that help them adjust to extremes of temperature and humidity（湿度）.
In very cold climates, there is a constant danger of developing hypothermia（低体温）, which is a life threatening drop in core body temperature to below normal levels. The normal temperature for humans is about 37.0°C. However, differences in persons and even the time of day can cause it to be as much as 6°C higher or lower in healthy individuals. It is also normal for core body temperature to be lower in elderly people. Hypothermia begins to occur when the core body temperature drops to 34.4°C. Below 29.4°C, the body cools more rapidly because its natural temperature regulating system usually fails. The rapid decline in core body temperature is likely to result in death. However, there have been rare cases in which people have been saved after their temperatures had dropped to 13.9—15.6°C. This happened in 1999 to a Swedish woman who was trapped under an ice sheet in freezing water for 80 minutes. She was found unconscious, not breathing, and her heart had stopped beating, yet she was eventually saved despite the fact that her temperature had dropped to 13.7°C.
In extremely hot climates or as a result of uncontrollable infections, core body temperatures can rise to equally dangerous levels. This is hyperthermia. Life threatening hyperthermia typically starts in humans when their temperatures rise to 40.6—41.7°C. Only a few days at this extraordinarily high temperature level is likely to result in the worsening of internal organs and death.
1.Why can humans keep stable body temperatures in different seasons?
A. Because their bodies are unusually efficient.
B. Because they experience different climates.
C. Because they can adjust to cultural patterns and technologies.
D. Because they have internal temperature regulating systems.
2.What does Paragraph 2 mainly discuss?
A. The dangerous effects of hypothermia.
B. The change of body temperature.
C. The survival of the Swedish woman.
D. The regulating systems of natural temperature.
3.People are unlikely to survive under the body temperature .
A. higher than 34.4°C B. lower than 29.4°C
C. between 40.6—41.7°C D. between 34.4—37°C
4.What is the best title for the passage?
A. Surviving in an ice trap
B. Getting to know hypothermia
C. Adapting to climate extremes
D. Changing core body temperature
International Airport Sheremetyevo Moscow
If You've Lost Personal Belongings
On Board --Contact the airline’s representatives
At the Airport --Contact:
-- Sheremetyevo Police Department
……………………………………+7(495)578-22-55
--Unclaimed luggage storage room in Terminal C
……………………………………+7(495)578-23-26
--Umclaimed luggage storage room in Terminal D
……………………………………+7(499)500-65-52
(domestic flights)
+7(495)753-86-41
(international flights)
When collecting Lost and Found items, you shall have an identification document, a boarding pass or a ticket,and also to indicate a place where the items were lost and prove they are yours.
If Your Luggage Is Lost or Damaged
Before leaving the arrival area, please turn to the Lost and Found counter to file a report. The written claim shall be submitted to the airline company not later than seven days from the time when the luggage was to be collected.
If your luggage is not found withintwenty-one days of the time when the claim was filed, you have the right to claim damages in the amount of not more than 600 rublesper kilogram. Amount refunded(退款) for a hand luggage lost through the fault of an airline is not more than 11,000 rubles regardless of its weight. Amount refunded for damaged luggage is calculated based on the same tariffs(关税).
Keep your flight documents (a ticket, boarding pass, luggage tag, anddelayed luggage report filed at the airport) untilthe end of the procedure for searching for your luggage.
Current information on luggage-tracing results
……………………………………+7(495)578-76-65
Lost and Found service of Aeroflot Airlines
……………………………………+7(495)544-33-25
(from9:00to20:00)
+7(495)753-86-41
(24 hours)
For further information please contact the airline.
1.What should you do if you find your personal possessions lost on board an airplane?
A. Submit a claim to the company. B. Go to the Lost and Found counter.
C. Contact the airline’s representatives. D. Contact the unclaimed luggage storage room.
2.How much money can you claim if your 20-kilogram hand luggage is lost?
A. 600 rubles. B. 11,000rubles at most.
C. 12,000 rubles at least. D. 12,000 rubles at most.
3.Which number will you probably dial to see whether your lost luggage has been found?
A. 7(495)578-76-65 B. 7(495)544-33-25
C. 7(499)500-65-52 D. 7(495)753-86-41
听下面一段独白，回答以下小题。
1.Where was the school located?
A. In the woods. B. Two miles from a farm. C. In the middle of a field.
2.What did all the students bring with them to school?
A. Books. B. Food. C. Money.
3.How old was the speaker on his first day at that school?
A. Fifteen years old. B. Eight years old. C. Seven years old.
4.What was the speaker confused about?
A. Why they had to eat outside.
B. Why smoking was not considered bad.
C. Why they had to go to school in summer.
听下面一段较长对话，回答以下小题。
1.Where are the speakers?
A. In Los Angeles. B. In Chicago. C. In Connecticut.
2.What does the woman finally buy?
A. A light coat. B. A heavy coat. C. A wool coat.
3.What discount does the woman get for the coat?
A. Five percent. B. Ten percent. C. Fifteen percent.
4.What does the man recommend to the woman in the end?
A. Some scarves. B. Some gloves. C. Some shirts.
听下面一段较长对话，回答以下小题。
1.What season do the two speakers talk about?
A. Autumn. B. Winter. C. Summer.
2.What does the woman think about watching movies?
A. It's so exciting. B. It's too boring. C. It's too expensive.
3.What do we know about the woman?
A. She hasn't been used to the weather there.
B. She will have a date with the man tonight.
C. She paid too much to watch a movie.
听下面一段较长对话，回答以下小题。
1.How did the man learn about the job?
A. From an agency. B. From the Internet. C. From the newspaper.
2.What will the man probably do next?
A. Learn to type faster.
B. Start working right away.
C. Pick up an application from the woman.
