In modern society, ceremonies for adolescence have lost their formal recognition and symbolic significance and there no longer is agreement as to what constitutes initiation ceremonies. Social ones have been replaced by a sequence of steps that lead to increased recognition and social status. For example, grade school graduation, high school graduation and college graduation constitute such a sequence, and while each step implies certain behavioral changes and social recognition, the significance of each depends on the socio-economic status and the educational ambition of the individual. Ceremonies for adolescence have also been replaced by legal definitions of status roles, rights, privileges and responsibilities. It is during the nine years from the twelfth birthday to the twenty-first that the protective and restrictive aspects of childhood and minor status are removed and adult privileges and responsibilities axe granted. The twelve-year-old is no longer considered a child and has to pay full fare for train, airplane, theater and movie tickets. Basically, the individual at this age loses childhood privileges without gaining significant adult rights. At the age of sixteen the adolescent is granted certain adult rights which increases his social status by providing him with more freedom and choices. He now can obtain a driver's license: he can leave public schools; and he can work without the restrictions of child labor laws. At the age of eighteen the law provides adult responsibilities as well as rights: the young man can now be a soldier, but he also can marry without parental permission. At the age of twenty-one the individual obtains his full legal rights as an adult. He now can vote, he can buy liquor, he can enter into financial contracts, and he is entitled to run for public office. No additional basic rights are acquired as a function of age after majority status has been attained. None of these legal provisions determine at what point adulthood has been reached but they do point to the prolonged period of adolescence.
The period of adolescence is much longer in industrial societies because ______.
A.the definition of maturity has changed
B.the industrialized society is more developed
C.more education is provided and laws against child labor are made
D.ceremonies for adolescence have lost their formal recognition and symbolic significance
第1题
影像增强管输入屏有效直径是20.32cm,输出屏有效直径是2.54cm,缩小增益是
A.64
B.81
C.49
D.9
E.8
第2题
影像增强管输入屏有效直径是23cm,输出屏有效直径是2.54cm,缩小增益是
A.64
B.81
C.49
D.9
E.8
第3题
影像增强管输入屏有效直径是23cm,输出屏有效直径是2.54cm,缩小增益是
A.64
B.81
C.49
D.9
E.8
第4题
影像增强管输入屏有效直径是32cm,输出屏有效直径是54cm,缩小增益是
A.64
B.81
C.49
D.9
E.8
第8题
影像增强器的工作原理,错误的是
A.静电场—电子透镜
B.输入屏—将X线转换成数字影像
C.输出屏—将电子像转换成可见光像
D.缩小增益—把较大面积上的亮度成像在较小面积
E.流量增益—由于光电子获得较大动能,使亮度提高
第10题
对影像增强器组成的正确描述是
A.由输入屏、电子透镜、输出屏组成
B.由增强器、光学系统、摄像机组成
C.由管套、增强管、吸气泵组成
D.由增强管、管套、电源组成
E.由增强管、物镜、监视器组成
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