9 的平方根是( ) A.3 B.-3 C.81 D.±3

题型:选择题

问题:

9 的平方根是( )

A.3

B.-3

C.81

D.±3

考点:二次根式的加减二次根式的定义二次根式的乘除同类二次根式
题型:选择题

下列关于基因的叙述,不正确的是[ ]

A.可以准确地复制

B.能够存储遗传信息

C.是4种碱基对的随机排列

D.是有遗传效应的脱氧核苷酸序列

题型:选择题

鸡汤历来被人们当成是营养佳品,很多人只喝汤却把炖过的肉弃之不食。但一项最新的研究认为鸡汤营养价值并不高,鸡汤里的鸡肉才是营养丰富的宝贝。估计这项研究成果公布以后,将会改变人们长久以来“吃肉不如喝汤”的观点。

上述推论基于下述哪项假设?()

A.鸡汤里只含有水溶性小分子物质、油和热量,客观上并不营养

B.现在很多人不吃肉只喝汤,是因为他们相信鸡肉的营养物质都在汤里

C.经过了长期的煲汤过程,鸡肉被炖的很烂,容易被消化,营养也利于吸收

D.多喝鸡汤其实就是摄取动物性脂肪的过程,饮用大量的鸡汤对身体很不利

题型:选择题

纸卡按照车型类别其分为7种:一类车,二类车,三类车,四类车,五类车,军车,公务车。

题型:选择题

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.

题型:选择题

简述园长的主要职责。

更多题库