问题 单项选择题

醋酸地塞米松注射液的含量测定:精密称取醋酸地塞米松对照品25.3mg,加无水乙醇溶解并稀释至100ml,摇匀,即得对照品溶液;另精密量取本品适量(相当于醋酸地塞米松25mg),置100ml量瓶中,加无水乙醇稀释至刻度,摇匀,过滤,即得供试品溶液。精密量取对照品溶液与供试品溶液各1ml,分别精密加无水乙醇9ml与氯化三苯四氮唑试液1ml,摇匀,再精密加氢氧化四甲基铵试液1ml。摇匀,在25℃暗处放置40~50分钟,在485nm的波长处测定吸收度。测得对照品溶液与供试品溶液的吸收度分别为0.478和0.468。本品的百分含量为()。

A.0.985%

B.0.991%

C.98.5%

D.99.1%

E.1.027%

答案

参考答案:D

阅读理解

It’s easy to see how to help some people, but what about those whose needs are not so clear? This story may have happened not long ago--- but it was a lesson which has stayed with me and helped me ever since.

It was Thanksgiving and I was volunteering with my parents at a shelter for the needy. We served hot food to whoever came in. Most of our dinners looked like they had been having hard times; their clothes were worn out and dirty. Then, a man came in, who looked anything but needy. He was well dressed. I wondered what he was doing there and my jaw (下巴) dropped in amazement when he joined the line for food. The closer he came to my service station , the more I muttered (小声抱怨). What was this man doing? Surely he wasn’t going to take food which was meant for those who were really in need!

Then my mother quietly took me to one side. She said, “You have thought that the needs of the people who come here must be purely physical, hunger, etc. And this gentleman doesn’t seem to have any of those problems. But what if his needs are emotional(情感的)? What if he needs comfort, friends, or just to be among other human beings? Her words hit me like a ton of bricks! I felt like I should apologize to the man--- but I didn’t.

About a week later the shelter received a large donation from an anonymous source. I can’t help but wonder if it came from that man.

Now, whenever I meet someone I remember my mother’s lesson and try to send kindness their way, no matter how they look. Needs aren’t always seen. But kindness always makes a difference.

小题1:How did the author feel as the well-dressed man joined the line for food?

A.Surprised

B.Excited

C.Nervous

D.Hopeless小题2:The author’s mother mainly wanted to tell the author that we ______.

A.shouldn’t judge a man by his appearance.

B.shouldn’t complain about others

C.should give others what they want.

D.should accept everything we meet小题3:What does the underlined word “anonymous” in Paragraph 4 probably mean?

A.Important

B.Unknown

C.Independent

D.Excellent小题4:From the last paragraph, we learn that ______.

A.seeing is believing

B.it’s difficult to be kind to others

C.some rich people pretend to be poor.

D.we should help people in the way they need.小题5:What would be the best title for the text?

A.My mother’s influence on my growth

B.The importance of volunteering

C.One of my most shameful experiences

D.My mother’s simple lesson in kindness

单项选择题