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【多选题】
以下属于倒角特征方式的有哪些？A.
角度距离
B.
距离距离
C.
顶点
D.
以上都不对
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皮皮学刷刷变学霸
举一反三
【多选题】Monogenic disorders also tend to be very rare, affecting only a fraction of one percent of the human population. This low prevalence can be attributed to a number of factors.
A.
First, many of these diseases are “early onset,” meaning that affected individuals die early in life, often before reproducing. The disease-causing alleles carried by these individuals are thus eliminated from the gene pool.
B.
At the same time, because many monogenic disorders are recessive, heterozygous individuals typically lead normal lives and show no signs of the disease. Thus, the diseasecausing alleles are never entirely eradicated from the population, and instead persist at a low frequency.
C.
The disease then manifests itself only in those rare individuals who inherit two mutant alleles. Monogenic disorders can occur more frequently, however, in families or populations in which the parents are genetically related.
D.
Such consanguineous marriages are more likely to produce offspring that are homozygous for the mutant, disease-causing alleles than are marriages between unrelated individuals.
【判断题】People perceive only a fraction of the stimuli to which they are exposed.
A.
正确
B.
错误
【单选题】新课程对“学生全面发展”提出哪几个方面的要求?()
A.
德智体全面发展
B.
德智体美劳全面发展
C.
面向全体，促进学生全面和谐与主动的发展
D.
学生各门学科都优秀
【简答题】论述消费者行为学的理论框架。
【单选题】She’s careful with her money, and spends only a fraction of her earnings.
A.
dime
B.
portion
C.
sum
D.
number
【单选题】She’s careful with her money, and spends only a fraction of her earnings.
A.
number
B.
sum
C.
portion
D.
dime
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