问题 单项选择题 A1型题

下列哪项不支持原发性血小板减少性紫癜()

A.血小板减少

B.出血时间延长

C.束臂试验阳性

D.骨髓中巨核细胞增多

E.凝血时间延长

答案

参考答案:E

解析:原发性血小板减少性紫癜必定有血小板减少。由于血小板减少,则出血时间可延长,束臂试验可阳性。由于该病血小板减少是由免疫性破坏过多所致,骨髓会代偿性增生,所以骨髓中制造血小板的巨核细胞会增多。而该病凝血基本正常,故不应有凝血时间延长。

选择题
写作题

阅读下面的短文, 然后按照要求写一篇150词左右的英语短文。

Gaby Lucy is just a 17-year-old American girl, but she has experienced life in the Dominican Republic as a volunteer. When she recalls her time volunteering there, she doesn’t think about the fact that she had no running water and lived in a small house outside. Instead, she remembers fondly the people she met, the work she did with a youth group to improve accessibility to a local library and the leadership skills she gained.

American teens are setting an example to their parents through their volunteer work, according to a new survey by Harris Interactive. The random national telephone survey released this week found that more teens volunteer to support a charitable cause(慈善事业) – 56 percent – than have a part-time job –39 percent. Parents said 82 percent of the teens in their lives do something to support charitable causes, including volunteering, inviting others to a cause or donating money.

【写作内容】

1.以约30个词概括短文的内容要点;

2.以约120个词就 “青少年从事志愿者工作” 这个主题发表你的看法,并包括以下要点:

(1) 青少年从事志愿者工作的意义;

(2) 简述一次你自己或你身边的人从事志愿者工作的经历和感受;

(3) 请你向同龄中学生发出号召。

【写作要求】

1.在作文中可以使用亲身经历或虚构的故事,但不得直接引用原文中的句子;

2.作文中不能出现真实姓名和学校名称。

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