[简答题]Alu family

[简答题]Alu家族(Alu family)

[简答题]Alu序列与SV40的复制起点序列有同源性，进一步研究发现，如果在细胞内表达T抗原的话，Alu序列的确可以发挥复制起点的作用。a．依据上述结果是否可以推断Alu序列是染色体DNA的复制起点。b．设计实验证实你的判断。

[单项选择]　 　Family Matters 　　This month Singapore passed a bill that would give legal teeth to the moral obligation to support one’’s parents. Called the Maintenance of Parents Bill, it received the backing of the Singapore Government. 　　That does not mean it hasn’’t generated discussion. Several members of the Parliament opposed the measure as un-Asian. Others who acknowledged the problem of the elderly poor believed it a disproportionate response. Still others believe it will subvert relations within the family: cynics dubbed it the "Sue Your Son" law. 　　Those who say that the bill does not promote filial responsibility, of course, are right. It has nothing to do with filial responsibility. It kicks in where filial responsibility fails. The law cannot legislate filial responsibility any more than it can legislate love. All the law can do is to provide a safety net where this morality provide insufficient. Singapore needs this bill not to replace morality, b
A. received unanimous support in the Singapore Parliament.
B. was believed to solve all the problems of the elderly poor.
C. was intended to substitute for traditional values in Singapore.
D. was passed to make the young more responsible to the old．

[单项选择]

In the American family the husband and wife usually share important decision making. When the children are (51) enough, they take part as well. Foreigners are often surprised by the permissiveness (宽容) of American parents. The old rule that "children should be seen and not heard" is rarely (52) , and children are often allowed to do (53) they wish without strict control of their parents. The father seldom expects his children to listen to him (54) question, and children are encouraged to be (55) at an early age. Some people believe that American parents carry this freedom (56) far. Others think that a strong father image would not (57) the American values of equality and independence. Because Americans emphasize the importance of independence, young people are expected to (58) their parental families by the time they have
A. too
B. almost
C. nearly
D. so