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Long-term memory, however, involves more effort and skill and changes through life. It's not until the early teens that most people develop a mature long-term memory.
4   First, we must get information into our heads through learning. Learning strategies can get rusty (生锈的，迟钝的) without constant use. High school and college students, who are forced to repeatedly exercise their long-term memory abilities (at least long-term enough to get them through a final exam), usually do well on memory tests. The longer you stay in school, the more chance you get to polish your learning skills. It's no wonder that more highly educated people have more effective memory skills throughout life.
5   Although older people in general learn somewhat more slowly than they did when younger, a dramatic difference exists between those who stay intellectually active -- reading, discussing, taking classes, thinking -- and those who do not. Giving the brain a daily workout is just as important as exercising your muscles. Brainwork keeps your learning strategies in shape, and this helps your memory to function at full capacity.
6   The next part of a healthy long-term memory is retention（保持力，记忆力）, the ability to store what you have learned. Memory researchers still do not know whether memories are lost -- whether they still exist in the brain nut our mental searching cannot turn them up, or have disappeared entirely as our brain ages.
7   The third necessity for memory is recall, the ability to mind the memories we have stored. Again, while aging has widely different effects on the recall abilities of different people, research indicates that the older we get, the longer it takes to recall facts. But slower recall is still recall. In fact, aging does not seem to have any effect on forgetting at all, which takes place at the same rate in younger and older people.
23. Paragraph 3_________
24. Paragraph 4 _________
25. Paragraph 5_________
26. Paragraph 6 ___________
A. Effects of aging on a person's recall ability
B. short-term memory versus long-term memory
C. retention as the second necessity for memory
D. like between learning strategies and effective memory skills
E. Significance of exercising your muscles
F. importance of staying intellectually active
27. Retention refers to _____________.
28. The rate of forgetting is the same _____________.
29. Remembering something all your life _____________.
30. Exercising your brain every day is beneficial _____________.
          A. to the proper function of your memory
          B. is called long-term memory
          C. the capacity to store what you have learned
          D. belongs to every long-term memory
          E. the ability to remain mentally healthy
          F. for younger and older people
第4部分：阅读理解
第一篇
First Aid
First aid is emergency care for a victim of sudden illness or injury until more skillful medical treatment is available. It may save a life or improve certain vital signs including pulse, temperature, a clear airway(气道),and breathing. In minor emergencies, first aid may prevent a victim’s condition from