放映频率在额定电压和电源频率下为24格/s。

阅读材料，回答问题：

材料一：西晋内迁各族分布图

材料二：魏主下诏，以为：“北人谓土为拓，后为跋。魏之先出于黄帝，以土德王，故为拓跋氏。夫土者，黄中之色，万物之元也。宜改姓元氏。诸功臣旧族自代（按：代，郡名，今山西省东北．河北省西北一带）来者，姓或重复，皆改之。”

请回答：

（1）材料一反映了我国古代哪一历史现象？

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（2）据材料二并结合所学知识分析魏主是指谁？本诏令提出了什么具体改革措施？魏主的改革有何影响？

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（3）上述材料反映了民族融合中的哪两种形式？

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Jimmy was so nervous not a single word _____ down in the dictation.

A．he wrote

B．he was written

C．did he write

D．was he written

下列动物中结构最简单的是（　　）

A．恐龙

B．珊瑚虫

C．蚯蚓

D．草履虫

通过服务，可以增加保险的附加值，建立良好的企业形象，达到客户与公司利益的双赢。但以下______不属于客户至上原则所要求的内容。

A．为客户提供热情、周到和优质的专业服务
B．不影响客户的正常生活和工作，言谈举止文明礼貌，时刻维护职业形象
C．秉持勤勉的工作态度，努力避免执业活动中的失误
D．在执业活动中主动避免利益冲突

Just how does a person arrive at an idea of the kind of person that he is He develops this (1) of self through a gradual and complicated (2) which continues throughout life. The notion is an (3) that one establishes only with the help of others. (4) the elementary knowledge that one is short or tall is a comparative judgment that we cannot make (5) we have the opportunity to (6) ourselves with others. One’s idea of qualities which are harder to (7) is even more dependent upon other people’s ideas.

Whether one is intelligent, or stupid; attractive, or ugly; these and many other ideas of the self are (8) from the reactions of people with whom we (9) This process of (10) the nature of the self from the reaction of others has been labeled the "Looking-glass Self" by Cooley, who carefully analyzed this psychological (11) of self-discovery.

Just as the picture in the mirror gives an image of the physical self, (12) the perception of the reactions of others gives an image of the social self. We know, (13) , that we are good at certain things and not at others. This (14) came to us from the reactions of other persons, first our parents and then other individuals (15) in life. It should be remembered that, as other people’s reactions could be (16) and understood in more than one way, the looking-glass self with which the individual (17) may easily differ from the image others have actually formed of his (18) Clearly, it is our perception of the responses of others and not their (19) responses that (20) our self-image, and these perceptions are often not accurate.

1（）

A.consent

B.label

C.frame

D.concept