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A.Malting educated changes nationwide takes decades of years.B.The younger studen

A. Malting educated changes nationwide takes decades of years.
B. The younger students attend schools, the better their results are.
C. Nine years of compulsory schooling is ideal in Norway.
D. More years at school result in higher test scores.

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A.Get good academic records.B.Make a list of what he should focus on.C.S

A. Get good academic records.
B. Make a list of what he should focus on.
C. Show his appreciation to volunteers.
D. Run for the Chairman of the Students Union.

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A.Malting educated changes nationwide takes decades of years.B.The younger studen

A. Malting educated changes nationwide takes decades of years. B. The younger students attend schools, the better their results are. C. Nine years of compulsory schooling is ideal in Norway. D. More years at school result in higher test scores.

A.Get good academic records.B.Make a list of what he should focus on.C.S

核酸杂交探针就是带有放射性标记的DNA分子。

目前，在重组体的筛选中，已经发展了许多构思巧妙、具有极高准确性的筛选方法。大致可以分为：①______；②______；③

在纯化一种蛋白质并研究其性质的实验过程中，你遇到了一些问题，请利用你所掌握的知识解决这些问题：①实验开始

A. Malting educated changes nationwide takes decades of years.
B. The younger students attend schools, the better their results are.
C. Nine years of compulsory schooling is ideal in Norway.
D. More years at school result in higher test scores.

目前，在重组体的筛选中，已经发展了许多构思巧妙、具有极高准确性的筛选方法。大致可以分为：①；②；③