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People who are outdoors in cold weather should avoid actions like suddenly lifting a heavy basket full of snow. Even walking through heavy, wet snow can strain a person’s heart.
Many people aren’t conditioned to the physical stress of outdoor activities and don’t know the dangers of being outdoors in cold weather. Those who like winter sports can suffer accidental hypothermia if they don’t make certain preparations.
Hypothermia means the body temperature has fallen below normal. It occurs when your body can’t produce enough energy to keep the internal (内部的) body temperature warm enough. It can kill you. Heart failure causes most deaths in hypothermia.
Children, the elderly and those with heart disease are at special risk. As people age, their ability to keep a normal internal body temperature often decreases. Elderly people can suffer hypothermia without knowing they’re in danger because they can’t notice the cold conditions as quickly as the young.
Besides cold temperatures, high winds, snow and rain can also steal body heat. Wind is especially dangerous because it removes the layer of heated air from around your body. At 30 degrees Fahrenheit in a 20-mile-per-hour wind, the cooling effect is equal to calm air at four degrees. Similarly dampness (湿气) causes the body to lose heat faster than it would at the same temperature in drier conditions.
To keep warm, wear more clothes. This traps air between layers. Also, wear a hat or head scarf. Much of your body’s heat can be lost through your head. Keep your hands and feet warm, too, as they tend to lose heat rapidly.
Don’t drink alcohol before going outdoors or when outside. Alcohol makes you feel warm at first because blood vessels in the skin expand. But heat is then drawn away from the body’s important organs.
【小题1】The underlined word “strain” in Paragraph 1 means ________.
A.injure | B.warm | C.control | D.burn |
A.It means the body temperature falls rapidly. | B.Most heart attacks are caused by it. |
C.It is not as scary as people think. | D.It can threaten a person’s life. |
A.they like exercising outside in cold mornings |
B.they can’t notice cold conditions if they are not told |
C.their body temperature is generally lower than young people’s |
D.their ability to keep a normal internal body temperature is not so good |
A.What causes the body to lose heat faster. | B.The advantages of drier conditions. |
C.What else can steal body heat. | D.Dangers of high winds. |
A.Feeling warm at first | B.The body’s heat is taken away |
C.Blood vessels in the skin expand | D.The risk of hypothermia is reduced |
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As Christmas drew near , Ursula was faced with just that problem.She had come to live in an American home and learn English. 1 she would mind the children and 2 anything she was asked.
One of her task was to keep track of 3 Christmas presents.Ursula did this faithfully, but she became increasingly 4 .What could she buy for her 5 with the little money she had that would compare with the gifts she was recording daily? 6 ,even without any of the 7 ,her employer seems to have everything.
Ursula 8 long and hard.On Christmas Eve,she went to a 9 .She moved slowly through crowds of shoppers, 10 things in her mind.Finally she bought a baby dress.She immediately called 11 .“Excuse me,please,can you help me find a poor family with a baby?” “A poor family?” said the 12 driver.“Yes,a very poor family.” Ursula told the man of what she was trying to do.He 13 in silence,and then said,“I know a family who 14 just about everything.”
When they reached a 15 ,the driver said,“They live on the third floor.” Ursula shook her head,“Would you take this dress to them and tell them it’s from someone … someone who has everything.”
Early the next day Ursula 16 everyone for the presents she received.Then,she began to 17 why there seemed to be none 18 her. She told about what she did the night before.When she finished,there was a long 19 .“You see,” she added,“I try to do a kindness in your 20 .And this is my Christmas present to you.”
1. A. In return B. As a result C. By the way D. In a sense
2. A. try B. learn C. teach D. do
3. A. delivering B. mailing C. arriving D. sending
4. A. excited B. worried C. tired D. interested
5.A.American family B. own family C. friends D. classmates
6. A. Otherwise B. Therefore C. Besides D. However
7. A. goods B. kindness C. gifts D. help
8. A. talked B. worked C. waited D. thought
9. A. store B. neighborhood C. street D. church
10. A. selecting B. matching C. remembering D. organizing
11. A. a shop B. a taxi C. her employer D. her parents
12. A. delighted B. anxious C. surprised D. respectful
13. A. noticed B. listened C. got out D. carried on
14. A. buys B. has C. uses D. needs
15. A. garage B. building C. station D. yard
16. A. thanked B. encouraged C. praised D. admired
17. A. settle B. repeat C. argue D. explain
18. A. to B. for C. from D. by
19. A. delay B. silence C. time D. break
20. A. case B. opinion C. memory D. name
查看习题详情和答案>>Kate said “Hello” to Mr. Patel as she entered. She picked up a wire basket and walked towards the back of the store __1__ the rice was kept. The room was quite large and divided by three long aisles(过道), with rows of shelves full of __2__. Besides her and Patel there were only two boys in the store. They were both wearing __3__ overcoats. They looked rather __4__ because the overcoats were too big for them. “__5__”, she heard one of them whisper to __6__. She walked on to the next aisle and found the __7__ she was looking for. Then she heard something else. It __8__ like a box dropping on the floor. She looked through the small open space __9__ goods on the shelf and saw one of the boys picking up a box. But __10__ putting it in the basket, he dropped __11__ into the inside pocket of his overcoat. Kate looked back and __12__ see Mr Patel at the door checking through a list. Then she looked through the __13__ in the shelf again. The boys still had their backs to her. They were putting something __14__ into their inside pockets and then one of them said, “Let's get out of here.” They moved away from her.
When she got to the door the two boys were __15__ her. She watched them __16__ for the few things in their __17__. They had both __18__ their overcoats. Mr Patel did not seem to know what they had done. He even __19__ at them as they were about to __20__. Now Kate decided to stop them.
1. A. which B. that C. there D. where
2. A.books B. baskets C. goods D. magazines
3. A. dirty B. long C. grey D. tight
4. A. strange B. young C. nervous D. excited
5. A. Look up B. Listen to me
C. Watch out D. Put it down
6. A. him B. her C. the boy D. the other
7. A. book B. rice C. bag D. magazine
8. A. looked B. heard C. showed D. sounded
9. A. between B. of C. around D. at
10. A. instead of B. before
C. without D. as if
11. A. something B. it
C. one D. that
12. A. would B. should C. might D. could
13. A. spot B. space C. goods D. books
14. A. important B. new C. else D. extra
15. A. next to B. beside C. in front of D. behind
16. A. paying B. looking C. asking D. reaching
17. A. hands B. pockets C. box D. basket
18. A. thrown B. stolen C. buttoned D. hidden
19. A. shouted B. smiled C. looked D. laughed
20. A. leave B. pay C. speak D. apologize
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