问题 选择题

“茶倍健”牙膏中含有茶多酚,但茶多酚是目前尚不能人工合成的纯天然、多功能、高效能的抗氧化剂和自由基净化剂.其中没食子儿茶素(EGC)的结构如图所示.关于EGC的下列叙述中正确的是(  )

A.分子中所有的原子共面

B.1molEGC与4molNaOH恰好完全反应

C.易发生加成反应,难发生氧化反应和取代反应

D.遇FeCl3溶液发生显色反应

答案

A.与苯环直接的原子在同一平面内,-CH2-为四面体结构,由中间环上的碳原子可知,分子中所有的原子一定不能共平面,故A错误;

B.苯酚显酸性,酚羟基与碱反应,则1molEGC与3molNaOH恰好完全反应,故B错误;

C.由-OH可知,易发生取代和氧化反应,则该物质的性质为易发生氧化反应和取代反应,难发生加成反应,故C错误;

D.由苯酚遇FeCl3溶液显紫色,该物质含有苯酚结构,则遇FeCl3溶液发生显色反应,故D正确;

故选D.

阅读理解

阅读理解

     Born on February 9,  1954 in Milwaukee,  Wisconsin, Christopher Gardner never know his father.

He lived with his mother, Bettye Jean Gardner, whom he adored, and, when necessary, in fosterhomes

(寄养家庭). Despite a life of hardship, his mother provided him with strong "spiritual genes" and taught

him some of the greatest lessons of his life, which he follows to this day.

    She convinced him that in spite of where he came from, he could attain whatever goals he set for

himself by saying, "If you want to, one day you could make a million dollars." Gardner believed this to

be fact, and knew he would have to find a career he could be passionate (热情的) about, one that

would allow him to "be worldclass".

    Though he was hardworking and determined, a series of circumstances in the early 1980's left him

homeless in San Francisco and the single guardian of his 2yearold son.  He was unwilling to give up his

son and his dream of financial independence. Though without connections or a college degree, he still

somehow earned a spot in a stockbroker (股票经纪人) training program. Often spending his nights in

a church shelter or the bathroom at a train station in Oakland, Gardner ended up the only trainee offered

a job at Dean Witter Reynolds in 1981.

    Today, he's the CEO of Christopher Gardner International Holdings, a company he founded with

offices in New York, Chicago, and San Francisco. The amazing story of his life was published as an

autobiography, The Pursuit of Happiness, and is the inspiration (灵感,启示) for the movie of the same

name starring Will Smith.

1. The underlined word "one" in the second paragraph refers     to   ________.

   A. the place where he lived

   B. the goal he set for himself

   C. the fact to make a million dollars

   D. his future career

2. From the third paragraph we can learn that ________.

   A. hardworking and determined people can also be defeated by bad luck

   B. Gardner did finish his stockbroker training program

   C. Gardner had to make a choice between his dream and  his beloved son

   D. it is impossible for one without a college degree to get a  job as a stockbroker

3. Gardner's story can be best described as ________.

   A. a ragstoriches story

   B. an orphantomillionaire story

   C. a CEOtostar story

   D. a failuretosuccess story

多项选择题