| Community cancer clusters are viewed
quite differently by citizen activists than by epidemiologists.
Environmentalists and concerned local residents, for instance, might immediately
suspect environmental radiation as the culprit when a high incidence of cancer
cases occurs near a nuclear facility. Epidemiologists, in contrast, would be
more likely to say that the incidences were "inconclusive" or the result of pure
chance. And when a breast cancer survivor, Lorraine Pace, mapped 20 breast
cancer cases occurring in her West Islip, Long Island, community, her
rudimentary research efforts were guided more by hope that a
specific environmental agent could be correlated with the cancers than by
scientific method. When epidemiologists study clusters of cancer cases and other noncontagious conditions such as birth defects or miscarriage, they tak A. help reduce the incidence of breast cancer in future generations B. improve her chances of surviving breast cancer C. determine the cause responsible for her own breast cancer case D. identify a particular cause for the breast cancer cases in West Islip [填空题]Different countries and different races have different (11) . In China, it is important for the host to be attentive towards the guest. The host shows this by (12) that the guest’s glass is always full and that there is always (13) food in his bowl. It is considered unnecessary to ask whether the guest wants more. In contrast, in England the host may behave more informally. The host (14) places the food in the middle of the table and tells the guest to help himself. It is considered unacceptable to (15) food or drink upon a guest, so the host never gives him anything without first checking whether he wants it.
[单项选择]History has demonstrated that countries with different social systems can join hands in meeting the common challenges to human ______and development.
A. evolution B. survival C. satisfaction D. damage [单项选择]According to sociologists, there are several different ways in which a person may become recognized as the leader of a social group in the United States. In the family, traditional cultural patterns confer leadership on one or both of the parents. In other cases, in such friendship groups, one or more persons may gradually emerge as leaders, although there is no formal process of selection. In larger groups, leaders are usually chosen formally through election or recruitment.
Although leaders are often thought to be people with unusual personal ability, decades of research have failed to produce consistent evidence that there is any category of "natural leaders". It seems that there is no set of personal qualities that all leaders have in common; rather, virtually any person may be recognized as a leader if the person has qualities that meet the needs of that particular group. Furthermore, although it is commonly supposed that social groups have a single leader research sugge A. ensuring harmonious relationships B. sharing responsibility with group members C. identifying new leaders D. achieving a goal 我来回答: 提交
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