生物分类学家将地球上所有的生物分为植物、动物等多个界，每个界又分出若干个门，如此

下列各项中不属于鲫鱼适于水中生活的特点的是：

A．身体呈流线型

B．体表覆盖鳞片

C．鲫鱼的体内有脊柱

D．鳍能保持身体平衡

第二节（共5小题，每小题2分，满分10分）

根据文章内容，从下框A-F选项中选出能概括每一段主题的最佳选项，选项中有一项为多余。

A．How did you find this volunteer opportunity?

B．What are the advantages and disadvantages of student volunteers?

C．Based on your observation, what makes a good volunteer stand out?

D．How has volunteering helped you?E. Have you had any volunteers who quit half-way?

F. What suggestions can you give to students who want to be volunteers?

An interview with a volunteer.

51.___________________

I am a member of our school’s volunteer association. During my freshman(大学一年级新生) year, I was asked to write up a plan for volunteers who assisted patients there. So I visited the hospice (末期病人疗养所) several times. Later, I realized I could do more for the patients and so began volunteering.

52.___________________

When I was a freshman, I was not used to college life. I sometimes felt the hospice was like home. Here, many grannies treated me like their own relative, and I could feel strongly that I was needed. Just shaking hands made them come to life. I not only get great comfort from helping many patients get through the last period of their lives. I also learn a lot from their experiences.

53.___________________

You have to be prepared both mentally and physically. Most people at this hospice are facing death. So you have prepared to be patient and make them happy and relaxed. Also, persistence is needed. After seeing so many people here die, I know that persistence is hard. But you have to remember that you job is to help them feel less pain before death.

54.___________________

Good volunteers have something in common: They regard their job as a career, rather than some task that’s been assigned. They learn to enjoy what they are doing, no matter how boring it is. We have a volunteer who has been with us for more than a year. His job is translating letters from kids we helped. Even when he was busy with his classes, he would take a taxi to our office to pick up the letters. When we asked him why, he told us he enjoyed the kids’ stories and learned a lot from them.

55.___________________

Students are often very enthusiastic and direct. They give us feedback that helps us improve our work. And they value the opportunity we give them to broaden their horizons. However, they are still young and some are not responsible enough. And sometimes, they are lazy and careless.  

焦炭的挥发份为什么要低？

对于那些自觉遵守会计职业道德规范的优秀会计人员，《会计法》明确规定应当只给予精神奖励。