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问题 选择题

体循环的起点和终点分别是（　　）

A．左心室、左心房

B．左心室、右心房

C．右心室、右心房

D．右心室、左心房

答案

体循环的路线为：左心室→主动脉→全身各级动脉→全身各处毛细血管→全身各级静脉→上、下腔静脉→右心房．肺循环的路线为：右心室→肺动脉→肺部毛细血管→肺静脉→左心房．所以体循环的起点为左心室；终点为右心房．

故选B

单项选择题

左肾静脉走行的描述，下列正确的是（）

A.经过肠系膜上静脉前方

B.穿过腹主动脉后方

C.经过肠系膜上动脉前方

D.穿过肠系膜上动脉与腹主动脉之间

E.穿过肠系膜下动脉后方
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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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