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Good advice is like medicine for the soul. What kind of 1　 have you recently received? Who do you go to got advice? Do you have a mentor(顾问)? A mentor is a　 2　 adviser.
　 Parents, teacher and friends are often great 　 3 .Sports figures, public officials can also be good 　4　 of mentors, but a person with whim you are a personal relationship will most likely be able to 　5 you the best advice.
　 Mentors teach things that seem to be 　6　 sense. Proverbs are wise old sayings that are common in every language and　 7　 , and can sometimes be　 8 for a nonnative to understand. For example, all that　 9　 is not gold(some things are not as 　　10 as they appear ).
　 Advice 11 in newspapers and magazines are another way to 12　 advice.
　 Talk shows on radio and television are also very popular. Americans and Canadians love to 　　 13　 themselves. Many people are not　 14 to ask for help or　 15 about a problem in order to receive advice. People generally will 16　 their own experience to 17 their friends. Overcoming a difficult situation is 18　 respecter in North America. People love to heat motivational (积极的) stories and 19　 . One proverb, a friend in need is a friend indeed, shares the concept that a true friend will help you out in times of 　 20　 .

1. A. success　　　　　　　　　　 B. measure　　　　　　　　 C. position　　　　　　　 D. advice

2. A. devoted　　　　　　 B. united　　　　　　　　　 C. trusted　　　　　　　　　 D. expected

3. A. interviewers　　　 B. mentors　　　　　　　　　 C. followers　　　　　　　　 D. competitors

4. A. examples　　　　　　 B. mentors　　　　　　　　　 C. manners　　　　　　　　 D. services

5. A. consider　　　　　　 B. exchange　　　　　　　　　 C. adapt　　　　　　　　　 D. offer

6. A. present　　　　　　　 B. attractive　　　　　　　 C. common　　　　　　　　 D. particular

7. A. experience　　　　　　 B. difference　　　　　　　　 C. culture　　　　　　　　　 D. behavior

8. A. simple　　　　　　　　　　 B. difficult　　　　　　　　 C. natural　　　　　　　　　　　 D. brief

9. A. glitters B. packages C. acts D. forces

10. A. different　　　 B. negative　　　　　　　　 C. primary　　　　　　　　　 D. valuable

11. A. columns　　　　　　 B. materials　　　　　　　　 C. wonders　　　　　　　　 D. add

12. A. reduce　　　　　　 B. add　　　　　　　　　　　　 C. keep　　　　　　　　　　　　 D. get

13. A. enjoy　　　　　　　 B. teacher　　　　　　　　 C. express　　　　　　　　 D. defeat

14. A. brave　　　　　　　 B. afraid　　　　　　　　　　　 C. honest　　　　　　　　 D. lucky

15. A. talk　　　　　　　　　　　 B bring.　　　　　　　　　　　　 C. care　　　　　　　　　　　　　 D. look

16. A. remind　　　　　　　 B. suggest　　　　　　　　 C. clone　　　　　　　　　　 D. share

17. A. lead to　　　　　　　 B. set free　　　　　　　　 C. help out　　　　　　 D. take over　　　　

18. A. originally　　 B. highly　　　　　　　　　 C. equally　　　　　　　　　 D. closely　　　

19. A. encouragementB. sadness　　　　　　　　 C. movement　　　　　 D. adventure　　　

20. A. happiness　　　　　　 B. trouble　　　　　　　　　 C. excitement　　　　　 D. nature

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　　Laser(激光)is short for Light Amplification by Stimulated Emission of Radiation．Laser light is different from daylight or electric lights．Industry put lasers to work almost immediately after they were invented in nineteen sixty．　　1　　．

　　The first medical operation using a laser took place the year following its invention．Doctors Charles Campbell and Charles Koester used a laser to remove a tumor from a patient's eye at Columbia-Presbyterian Hospital in New York City．　　2　　．

　　Lasers have made measurement an exact science．Astronomers have used lasers to measure the moon's distance from Earth．　　3　　．For example, drawing a perfectly level straight line on a construction site is easy using a laser．

　　　　4　　．And the jewelry industry uses lasers to write on the surface of the world's hardest substance, diamonds．

　　Lasers are found in many products used almost everywhere．Over one hundred years ago, writers imagined that beams of light could be powerful weapons．Today, lasers guide missiles and bombs．American defense companies are working on giant laser guns recognizable to science fiction fans everywhere．　　5　　．

　　Scientific American magazine says huge lasers turn only about twenty to thirty percent of the energy they use into a laser beam．The rest is lost as heat．

　　That has not stopped scientists from working to perfect powerful lasers that, one day, may be able to shoot missiles out of the sky．

A．But weapons were not the first to use it on the list．

B．All lasers have several things in common．

C．Mappers and builders use laser technology every day．

D．But there are technological difficulties．

E．Lasers have also changed the way we communicate．

F．Manufacturers have used lasers for years to cut and join metal parts．

G．Since then, doctors have used lasers to cut and remove tissue safely with little risk of infections．