The ups and downs of life may seem to have no predictable plan. But scientists now know there are very definite life patterns that almost all people 1. Today，when we live 20 years longer than our great-grandparents，and when women mysteriously 2 men by seven years，it is clearer than ever that the“game of life”is really a game of 3 . As we age, we trade strength for ingenuity，speed for thoroughness，passion for reason. These 4 may not always seem fair，but at every age，there are some 5 . So it is reassuring to note that 6 you've passed some of your“prime.”you still have other prime years to experience 7 . Certain important primes seem to 8 later in life. Then which are the best years of life? When asked this question, people may 9 with various answers. It seems that different periods of life 10 to different kinds of achievement.

　　1. A. know B. share C. resist D. like

　　2. A. outnumber B. outcome C. outlive D. outbreak

　　3. A. trade-offs B. trade-ins C. years D. age

　　4. A. discussions B. changes C. businesses D. exchanges

　　5. A. problems B. advantages C. difficulties D. profits

　　6. A. no matter B. as soon as C. even if D. because of

　　7. A. in the past B. in the future C. just then D. just now

　　8. A. peak B. climb C. stay D. result

　　9. A. come out B. come in C. come at D. come up

　　10. A. are likely B. are fixed C. are related D. pay attention

　　参考答案：

　　1. B 2. C 3. A 4. D 5. B 6. C 7. B 8. A 9. D 10. C