问题 选择题

苯丙酸诺龙是一种兴奋剂,结构简式为:

,有关该物质的说法正确的是(  )

A.其分子式为C27H32O3

B.最多可与6 mol H2发生加成反应

C.能使溴的四氯化碳溶液褪色

D.在NaOH 溶液中水解后可生成两种盐

答案

A.由结构可知,1个分子中含有27个C原子,33个H原子,3个O原子,则分子式为C27H33O3,故A错误;

B.分子中含有苯环、碳碳双键、碳氧双键,则1mol该物质最多可与5mol H2发生加成反应,故B错误;

C.分子中含有碳碳双键,则能使溴的四氯化碳溶液褪色,故C正确;

D.在NaOH 溶液中水解生成的羧酸能与碱反应生成盐,则只有一种盐,故D错误;

故选C.

单项选择题
阅读理解

阅读理解。

     OUR KIDS ARE AMAZING-especially compared with everybody else's (who seem to cry all the time).

How do you show your love for your kids this holiday season? With toys that are smooth and colorful,

interactive and exciting. And with ones that have educational value-because you are the boss. 

     1. FLAX ART HOSPITAL PUZZLE AND PLAY SET

     Here is a toy that doesn't need power-and the kids have to put it together themselves. This 50-piece

puzzle set is made of soft-edged hardwood and makes a complete hospital, with an X-ray room. It also

includes eight patients, a car and a driver. $ 135; flaxart. com.

     2. TINY LOVE ACTIVITY BALL

     Sure, it's cool, but this colorful baby toy also develops problem solving and motor skills. It has a head and

legs, a magnetic (磁性的) hand and a tail. Suitable for little ones from 6 to 36 months. $ 19.95; tinylove.com.

     3. ROBOSAPIEN

     This small, remote-control robot is really powerful. It performs 67 preprogrammed functions (功能),

including throwing, kicking, picking up and dancing. You can even program your own function-which, sadly,

does not include doing windows. $ 99; robosapienonline. com.

      4. MINI PEDAL CAR

     Want a Mini Cooper but can't fit the family inside? Get one for the kids. They can jump into this Mini car,

which comes in hot orange with a single adjustable (可调的) seat, and ride away. But it could spoil them for

that used car they'll be driving when they turn 16. For ages 3 to 5. $ 189; mininss. com (click on "gear up,"

then "Mini motoring gear").

1. Which toy is said to have the special design for children's safety?

A. ROBOSAPIEN

B. MINI PEDAL CAR

C. FLAX ART HOSPITAL PUZZLE AND PLAY SET

D. TINY LOVE ACTIVITY BALL

2. Which toys are fit for three-year-old kids?

A. 1 am 3.

B. 2 and 4.

C. 1 and 2.

D. 3 and 4.

3. Educational value is mentioned in all the toys EXCEPT ______.

A. FLAX ART HOSPITAL PUZZLE AND PLAY SET

B. TINY LOVE ACTIVITY BALL

C. ROBOSAPIEN

D. MINI PEDAL CAR 

4. This passage is written for _______.

A. parents

B. children

C. the writer

D. the boss