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问题 单项选择题

上海证券交易所上市交易的某只股票，2009年末的每股税后利润为0.2元，市场利率为2.5%。
根据以上材料，回答下列问题：

股票动态价格主要是指股票持有期间的价格，其确定方法与( )的价格确定基本相同。

A．分期付息到期还本债券

B．到期一次还本付息债券

C．分期还本到期一次付息债券

D．分期付息债券

答案

参考答案：A

解析： 股票交易在二级市场是不断易手的过程，属于动态交易的过程。因此，股票动态价格主要是指股票持有期间的价格，其确定方法与分期付息到期还本债券的价格确定基本相同。

选择题

将浑浊的河水变澄清，实验操作中必须用到的仪器是[ ]

A.

B.

C.

D.
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单项选择题

The first and most important agents of socialization are the people who care for infants. In the earliest months, messages from nurturers constitute the child’s basic understanding of the world around it. This is the infant’s first introduction to the language that shapes perception and elicits emotion.
Another powerful source of information and socialization is the friendship of peers. Peers are equals that one can deal with on the same level as oneself, whereas parents are superiors. The heavy emotional overlay of family relationships makes some kinds of learning difficult.
Much formal socialization is placed in the hands of professionals. Teachers from kindergarten on are specifically designated agents of socialization. Ideally, a teacher is one who has both knowledge and the skills to present it. During the course of teaching their subjects, classroom instructors provide role models and attempt to convey the excitement of learning itself.
In earlier times, parents, friends and teachers would comprise the list of primary childhood socializers. Children’s books, comics and magazines might also have been mentioned as sources of information on norms and role models. Today one must add three powerful indirect or non-personal socialization agents: radio, movies and television. Many people learn about politics, form a vision of well-being, and develop attitudes towards others from what they see on the screen and hear through the speakers.

According to this passage, ______ makes some kind of learning difficult.

A．long distance

B．formality

C．much indulgence

D．family influence
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