当你的一对表兄妹准备结婚时,你应当如何用所学的遗传学知识,劝阻他们近亲不能结婚?

题型:解答题

问题:

当你的一对表兄妹准备结婚时,你应当如何用所学的遗传学知识,劝阻他们近亲不能结婚?

考点:人类遗传病
题型:解答题

Many theories concerning the causes of juvenile delinquency (crimes committed by young people) focus either on the individual or on society as the major contributing influence. Theories (51) on the individual suggest that children engage in criminal behavior (52) they were not sufficiently penalized for previous misdeeds or that they have learned criminal behavior through (53) with others. Theories focusing on the role of society suggest that children commit crimes in response to their failure to rise above their socioeconomic status, (54) as a rejection of middle-class values. Most theories of juvenile delinquency have focused on children from disadvantaged families, ignoring the fact that children from wealthy homes also commit crimes. The latter may commit crimes (55) lack of adequate parental control. All theories, however, are tentative and are (56) to criticism. Changes in the social structure may indirectly (57) juvenile crime rates. For example, changes in the economy that lead to fewer job opportunities for youth and rising unemployment (58) make gainful employment increasingly difficult to obtain. The resulting discontent may in turn lead more youths into criminal behavior. Families have also (59) changes these years. More families consist of one-parent households or two working parents; consequently, children are likely to have less supervision at home (60) was common in the traditional family structure. This lack of parental supervision is thought to be an influence on juvenile crime rates.

54().

A.or 

B.but rather 

C.but 

D.or else

题型:解答题

()时期,朝廷明令禁止官吏百姓不得使用宗庙祭祀祖先。

A.秦始皇

B.汉武帝

C.汉文帝

D.宋太宗

题型:解答题

患者,女,24岁。进餐时突然倒地,意识丧失,四肢抽搐,双目上翻,牙关紧闭口吐白沫,小便
失禁,约20分钟后抽搐停止,神识清醒,自觉肢体酸痛。头颅CT、血液生化检查均正常。自幼有类似发病,其诊断是

A.癔病性抽搐
B.低血钙性抽搐
C.脑寄生虫病
D.癫痫大发作
E.昏厥性抽搐

题型:解答题

高度重视和解决就业问题有什么经济和政治意义

题型:解答题

工厂给水可划分为几个系统?

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