问题
单项选择题
青霉素G水溶液不稳定，久置可引起的变化是( )
A．诱发过敏反应及中枢不良反应
B．药效下降
C．药效下降并诱发过敏反应
D．诱发过敏反应
E．诱发中枢不良反应
答案
参考答案：C
搜题请搜索小程序“爱下问搜题”
青霉素G水溶液不稳定，久置可引起的变化是( )
A．诱发过敏反应及中枢不良反应
B．药效下降
C．药效下降并诱发过敏反应
D．诱发过敏反应
E．诱发中枢不良反应
参考答案：C
Seven loyal（忠实的）readers came to the Teens Office two weeks ago. They had a wonderful day learning how to make a newspaper. But what 36 made them excited was that they had their say. “What most _37_ me was when I was saying something, I found all eyes were on me,” said Tang Shining, one of the students. Her friend, Li Chunbei _38_, and felt very glad that when she was talking, the editors（编辑） nodded and _39_ took notes. Students are happy to see the editors listen to their _40_. You may often _41_about being neglected（忽视） by teachers and parents. _42__ before complaining, please make sure that you have already spoken about your _43_. Tra  ditionally in China, teachers at school and parents were_44_ the ones to tell teenagers what they should and shouldn’t do. The young are _45_ to doing what they are told, rather than thinking by themselves. But then their ideas would be locked in their brain and not be _46_. A girl wrote to Teens about her family story. She _47__ to be very sad because her father seldom talked and played with her. After years of consideration, she _48_ decided to write her father a letter, telling him about her sadness. To her _49__, the father _50_, saying that he didn’t realize his mistake. From then on, he really _51_. Sometimes, we need to let our _52__ be heard, so others can understand our thoughts and feelings. Don’t be afraid of being _53_ for what you have done. You know it is your _54_ to speak your mind. Even if your suggestions are denied, at least you have tried your best. You will not be left with any _55_.
|
difficulty