问题 填空题

将长骨锯开,可观察到骨密质的结构特点是______,终生具有造血功能的红骨髓位于______内,骨膜中的______为骨组织提供营养物质.

答案

以下是骨的结构图:

骨的基本结构包括3骨膜、6、7骨质和4骨髓三部分组成;

骨膜内有2血管和成骨细胞,血管对骨起营养作用,成骨细胞可以产生新的骨质,与骨的长粗和骨的愈合有关;

骨质包括6骨松质和7骨密质,前者呈海绵状,由许多片状的骨小梁交织而成,分布于骨的内部和长骨的两端.后者质地坚硬致密,主要分布于骨干,抗压力强;

4骨髓填充在5骨髓腔和骨松质的空隙内,分为红骨髓和黄骨髓,红骨髓有造血功能.幼年时的骨髓全是红骨髓.成年之后,长骨骨干内的红骨髓逐渐被脂肪组织代替,称黄骨髓,失去造血功能. 失血过多时会转化红骨髓,恢复造血功能.

故答案为:骨组织致密;骨松质;神经和血管.

单项选择题
写作题

第二节读写任务(共1小题,满分25分)

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。

When I was a teenager, my dad did everything he could to advise me against becoming a brewer(啤酒制造者). He didn’t even want me anywhere near a vat(酿酒用的桶). So I did as he asked. I got good grades and went to Harvard.

In the second year, I began to realize that I’d never done anything but go to school. So, at 24 I decided to drop out (辍学)for some time. Obviously, my parents didn’t think this was a great idea. But I felt strongly that one can’t wait till he is 65 to do what he wants to in life. Having worked for 2 years, I went back to Harvard to continue my study.

After graduation, I got a highly-paid job in Boston. After working there five years, I wondered, “Is this what I want to be doing when I’m 50?” At that time, Americans spent good money on beer in low quality. Why not make good beer for Americans? I thought.

I decided to quit my job to become a brewer. When I told Dad, he was astonished, but in the end he supported me. Six weeks later, at the Great American Beer Festival, my Sam Adams Boston Lager(淡啤酒) won the top prize for American beer. In the end I was destined(注定) to be a brewer. My advice to the young is simple: decide by yourselves not your seniors what you should do for a life when you are young. 

【写作内容】

1.用大约30个词概括原文内容。

2.然后用大约120个词表达自己对如何解决“孩子的个人志向与家长愿望之间的矛盾”的看法,内容包括:

(1)说明家长尊重孩子志向的重要性。

(2)用自己或他人的事例说明应该如何解决孩子的个人志向与家长愿望之间的矛盾。

【写作要求】

1.作文中可使用自己亲身经历或虚构的故事支持你的观点,也可以参照阅读材料的内容,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。

【评分标准】概括准确,语言规范,内容合适,篇章连贯。