题干

已知 sinxcosx=
1
5
,且 x(0
π
2
)
,则sinxcosx=____
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1225

同类题2

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     Rocky Mountain Summer Adventure Camps Bring Learning to Life!

     The Museum of Idaho Rocky Mountain Adventure Camps are available for students aged 6-14. Participants will have amazing outdoor experiences combined with adventure and fun. Space is limited to 20participants each session and registration is not complete until payment has been received by the Museum of Idaho. Registration fee is non-returnable.

     Junior Adventure Camp

     Children aged 6-9 (must have completed first grade).

     Well conduct experiments, go on field trips, and discover the fun and excitement of science! This year, we will learn about colonial(殖民主义的)science to go along with our exhibit, America’s Revolution!

     Instructor: Chloe Doucette

     Dates: June 27- June30

     Time: 9:00 a.m. - noon

     Cost: $75 per child, $60 per child for MOI members, $50 each additional brother or   sister

     Original Camp

     Children aged 9-12 (must have completed third grade)

     Original Camp is for children who are ready for an exciting full-day outdoor camp. Participants visit various habitats and ecosystems as we explore eastern Idaho. Well go bird watching, hiking in the mountains, and lots more!

Instructors: Alana Jensen, Jerry Petty

     Dates: July 18- July21

     Time: 9:00 a.m.  4:00 p.m.(9:00-6:00 on the last day)

     Cost: $150 per child, $125 per child for MOI members, $100 each additional brother or sister

     High Adventure Camp

     Youth aged 11-14 (must have completed fifth grade)

     High Adventure Camp is for youth who are looking for an amazing summer adventure! This outdoor camp is full of exciting physical challenges and involves participants in even more in-depth activities than the Original Camp. This year, students will study how rattlesnakes experience the outdoors!

     Instructors: Chloe Doucette, Mike Winston, Jerry Petty

     Dates: August 8- August 11

     Time: 9:00 a.m.  4:00 p.m.(9:00  6:00 on the last day)

     Cost: $150 per child, $125 per child for MOI members, $100 each additional brother or sister

     Participate in both Original AND High Adventure for only $200! Call522-1400 ext. 3002 to take advantage of this great offer. If you have any questions about the Museum of Idaho’s education programs, contact Chloe Doucette, Education Director at (208) 522-1400 ext.3002.

同类题4

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    Jeanne Calment, a French woman, became a record breaker on 17 October of 1995, when at the age of 120 years and 238 days, she became the longest-lived human being on record. A Japanese man died in 1986 at the age of 120 years and 237 days.

    Jeanne Calment lives in a small old people's home in the south of France; her husband, her only child and her grandson have all died. She is nearly blind and deaf and is always in a wheelchair, but her doctor describes her as being more like a 90-year-old in good health than someone of 120. She still has a lively sense of humor. When asked on her 120th birthday what she expected of the future, she replied: A very short one. She also remarked that she thought the good Lord had forgotten all about her.

    So what is the key to a long life? According to some doctors, diet, exercise and no smoking are the three important factors. Jeanne Calment has followed two of the tips. She has always eaten a healthy diet, and she used to do exercise every day until she broke her leg at the age of 115. However, until recently she drank two glasses of strong red wine a day, and she does smoke (now only a little). Besides, Jeanne Calment might have got very good genes from her parents. Her father lived to the age of 94 and her mother to 86.

    A local lawyer bought her house when she was 80 under an agreement that he would pay her some money every year until her death. It must have seemed a good move at the time, but so far the lawyer has paid her at least three times the value of the house. Every year on her birthday Jeanne Calment sends him a card saying: Sorry, I'm still alive!