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问题 选择题

把a3﹣2a2+a分解因式的结果是

A．a2（a﹣2）+a

B．a（a2﹣2a）

C．a（a+1）（a﹣1）

D．a（a﹣1）2

答案

答案：D

题目分析：要将一个多项式分解因式的一般步骤是首先看各项有没有公因式，若有公因式，则把它提取出来，之后再观察是否是完全平方公式或平方差公式，若是就考虑用公式法继续分解因式。因此，

先提取公因式a后继续应用完全平方公式分解即可：。故选D。

综合题

阅读下列材料回答问题：

材料一 中华五千年的农耕历程诞生了丰富灿烂的农耕文化，其中众多诗词及其绘画形象地再现了我国传统的小农经济，譬如：昼出耘田夜绩麻，村庄儿女各当家。童孙未解供耕织，也傍桑阴学种瓜。          ______《四时田园杂兴（其一）》

材料二 茶叶在19世纪30年代每年出口5000万磅，1841年增至7000万磅，1851年达9900万磅，几乎增加了一倍。丝的出口，在鸦片战争前一般每年只有几千包，最多不过10010包，1847年增至22000多包。由于丝、茶的大量出口，一些地区的农民纷纷放弃粮食生产转而种桑植茶。

材料三 过春节，贴春联是中国的传统文化习俗，春联的内容往往和历史变迁相联系。下列春联反映了新中国成立以来的农村变化：

春联一：毛 * * 挥手指方向；合作化道路宽又广。

春联二：食堂巧煮千家饭；公社饱暖万人心。

春联三：种责任田仓里储粮翻两番：行大包干银行存款增十倍。

（1）根据材料一及所学知识，概括中国古代农业经济的基本特点。（4分）

（2）材料二反映中国农业生产的变化有哪些？这些变化说明了什么？（4分）

（3）三对春联各反映了怎样的农业政策？（3分）春联二中的政策有“暖人心”吗？为什么？（3分）
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填空题

When I tell people that I’m a professor of communication, they often are confused (1) what the term "communication" means. Many people think mass communication is the (2) type of communication, but mass communication is only one form of communication. The study of mass communication focuses on messages that are (3) over (4) such as television, newspapers, and radio. Other areas of (5) focus on the messages individuals send to one another. Some of the major contexts in which communication is studied (6) the interpersonal context, the organizational context, and the intercultural context. A scholar studying (7) communication, for example, might examine how married couples (8) with misunderstandings and the effects these misunderstandings have on (9) satisfaction. Organizational communication scholars, on the other hand, might study (10) the communication styles used by managers and their subordinates influence productivity and efficiency in a company or factory.
My area of specialization is intercultural communication. Intercultural communication is an (11) field of study which incorporates research from disciplines (12) as social psychology, sociology, cultural anthropology, sociolinguistics, and of course, communication. One of the (13) important areas of research addressed by intercultural scholars is how misunderstandings can be (14) when people communicate with Others from different (15) . To understand the process of intercultural communication, we must study how individuals’ cultural backgrounds (16) their communication behaviors.
The area of intercultural communication is a relatively new (17) of study even in the United States. While most Chinese students studying communication in the United States (18) on mass communication, there are some who are interested in intercultural communication and plan to return to China to teach and (19) research in this area. The work of these Chinese scholars on intercultural communication is important because it will help improve (20) between Chinese and Americans in the future.
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