2.——青夏教育精英家教网—

摘要： 2.

网址：http://m.1010jiajiao.com/timu3_id_2724036[举报]

(6分)已知烯烃、炔烃在臭氧作用下发生以下反应：
CH₃—CHCH—CH₂—CH==CH₂CH₃CHO+OHC—CH₂—CHO+HCHO
CH₃—C≡C—CH₂—C≡CH

CH₃COOH+HOOCCH₂COOH+HCOOH
某烃化学式为C₁₀H₁₀，在臭氧作用下发生反应：
C₁₀H₁₀

CH₃COOH+3HOOC—CHO+CH₃CHO
(1)C₁₀H₁₀分子中含_______________个双键，_______________个三键。
(2)C₁₀H₁₀结构简式为____________________________________________________________。查看习题详情和答案>>

_1_ name is Wei Hua, I _2_ a girl. My_3_ name is Hua and last name _4_
Wei. I’m a _5_ . My teacher is Mr Li, he is a good teacher. Tom is my _6_,
_7_last name is Green Tom and I _8_ good friends. We are in Class 3, Grade 1.
Tom_9_ a nice mother, _10_father is good, too.
【小题1】A. I     B.His    C.My
【小题2】A.is     B.am    C.are
【小题3】A. Last   B.first   C.family
【小题4】A.is       B,are    C.does
【小题5】A.student   B.students   C.some shudents
【小题6】A.friends B.friend     C.meny friend
【小题7】A. My        B. He      C. His
【小题8】A.is      B.Are   C.Isn’t
【小题9】A.have   B.has    C.is
【小题10】A.He    B.His    C.They

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1 is becoming popular these days. Many of us run for our 2 . 3 say many of the health problems come from these 4 habits: eating too much, 5 too much, smoking cigarette, and not having enough 6 . Doctors tell us, ‘Eat less, don’t smoke, 7 exercise more.’ Running is a good exercise 8 it helps build a strong heart. It also helps most people
9 weight. 10 80-year-old woman runs three times a week. She is getting 11 . Running is good for health in other 12 , too. Many runners say running makes colds and other small health problems 13 . ‘Running is my doctor,’ says a man. Running can also make people feel 14 . So today men and women of all 15 enjoy running.

1 Miss Gao’s class there are 2 students. There are twenty-four boys, and twenty-two girls. 3 of the boys is 4 . His name is Jim. All 5 boys are Chinese . All of the Chinese students are Young Pioneers. In the class there are two 6 girls. They are 7 . 8 names are Lily and Lucy. The other girls are Chinese. We are 9 friends. There’s 10 difference, American-English-Chinese.