结构中含有氟元素的甾体激素为A．醋酸地塞米松 B．醋酸泼尼松 C．黄体酮 D．甲睾酮

阅读理解。

     David and his brother Greg don't go to school in the morning. They go to school after lunch, at one o'clock. They

have math at one-fifteen. David likes math because it's interesting. Greg doesn't like math. David and Greg have P.E.

after math. They like the teacher, Mr. Wright, and they like P.E. because it's fun. But Greg's favorite subject is Spanish

and David's favorite is music .He plays the piano and the violin.

根据短评内容判断正误，对的打“T”，错的打“F”。

( )1.David and Greg have P.E. after math.

(     )2. David and Greg go to school in the afternoon.

(     )3. They have math class at two-fifteen.

( )4.Greg doesn't like math.

(     )5.David plays the piano.  

( )6.Spanish isn't David's favorite subject.

(     )7. Mr Wright is the math teacher.

(     )8. They don't like P.E. because it's boring.

(     )9. Greg likes his Spanish class.

(     )10.Music isn't David's favorite subject.

圆锥的底面半径为3cm,侧面展开图是圆心角为120º的扇形,求圆锥的全面积。

在标准ASCII码表中，已知英文字母A的ASCII码是01000001，则英文字母E的ASCII码是( )。

A．01000011

B．01000100

C．01000101

D．01000010

看图片，回答下列问题：

（1）看到下面的图片，你有什么样的感想？

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（2）除了美丽的祖国风光，还有哪些让你骄傲和自豪的中华文化？

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 （3）作为中学生的我们肩负着实现中 * * 伟大复兴的重任。请你说说我们应该怎样热爱祖国呢？

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生产的91个零件中，有9个是废品，合格率是91%．（）