[单项选择]There appears to be a great variation as to the treatment that older adults receive, ranging from extreme reverence and respect to abandonment and deprivation with a broad range of studies dealing with perceptions of old agc. Most investigators report findings which support the view that attitudes toward the elderly were most favorable in primitive societies and decrease with increasing modernization to the point of generally negative view in industrialized Western nations. In other words, the more "civilized" the society is, the more likely they are to be ageist and maintain negative attitudes about the aged. Some examples may be helpful. Men in the Middle East view old age as life’s summit. Older men are viewed as having attained high status and prestige. In fact, the word "sheik" originally meant "old man". No mention is, however, made of women’s status in old age in the Middle East. Women’s status and power does increase in many cultures following menopause. It is stat
A. There is a wide variation.
B. There is a great decease.
C. There is an important finding.
D. There is an interesting contrast.

[单项选择]There appears to be a great variation as to the treatment that older adults receive, ranging from extreme reverence and respect to abandonment and deprivation with a broad range of studies dealing with perceptions of old agc. Most investigators report findings which support the view that attitudes toward the elderly were most favorable in primitive societies and decrease with increasing modernization to the point of generally negative view in industrialized Western nations. In other words, the more "civilized" the society is, the more likely they are to be ageist and maintain negative attitudes about the aged. Some examples may be helpful. Men in the Middle East view old age as life’s summit. Older men are viewed as having attained high status and prestige. In fact, the word "sheik" originally meant "old man". No mention is, however, made of women’s status in old age in the Middle East. Women’s status and power does increase in many cultures following menopause. It is stated that

[单项选择]There is a great deal of geographical variation in the frequency of many surgical procedures—up to tenfold variation per hundred thousand between different areas in the numbers of hysterectomies, prostatectomies, and tonsillectomies. To support a conclusion that much of the variation is due to unnecessary surgical procedures, it would be most important to establish which of the following
A. A local board of review at each hospital examines the records of every operation to determine whether the surgical procedure was necessary.
B. The variation is unrelated to factors (other than the surgical procedures themselves) that influence the incidence of diseases for which surgery might be considered.
C. There are several categories of surgical procedure (other than hysterectomies, prostatectomies, and tonsillectomies) that are often performed unnecessarily.
D. For certain surgical procedures, it is difficult to determine after the operation whether the procedures were necessary or whether alternative treatment would have succeeded.
E. (E) With respect to how often they are performed unnecessarily, hysterectomies, prostatectomies, and tonsillectomies are representative of surgical procedures in general.

[单项选择]
Home schooling appears to be a great success for middle-class and wealthy families when one parent is home most of the time. However, home schooling does not work in inner-city neighborhoods because parents either work during the day or actively look for work. Numerous estimates between 1 and 2 million have been made regarding the number of home-schooled children in this country. Home schooling will grow in the future as course materials and tutoring systems vastly improve.
Not too many years ago, learning at home meant reading a book and doing homework with tutoring from a parent or older sibling. Today, homes have an outstanding tutor available 24 hours a day, seven days a week. This tutor never loses its patience, becomes upset, tums critical, or scolds a child for poor performance. In fact, the new tutoring system constantly recognizes good performance and provides praise for progress in learning. This tutor is the mult
A. Modern tutors are more patient than those in the past
B. Students are praised whenever they learn new things.
C. Courseware quality improves with the help of parents.
D. Tutoring systems can help students build self-esteem.

[单项选择]t_R
A. 峰面积
B. 峰高
C. 保留时间
D. 峰宽
E. 半高峰宽

[填空题]It is a great pity that we (not catch)______the train.

[单项选择]t_R表示
A. 相对保留时间
B. 相对标准偏差
C. 比旋度
D. 比移值
E. 半衰期

[简答题]季节性(seasonal variation)

[填空题]Environmental conditions determine the variation of the growth of the tree.