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【单选题】
可承载生物遗传信息的分子结构是A.
多不饱和脂肪酸的位置
B.
氨基酸的侧链基团
C.
脂蛋白的脂质结构
D.
核酸的核苷酸序列
E.
胆固醇的侧链结构
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举一反三
【简答题】简述模式窗体与非模式窗体的区别。
【简答题】World Reading Day was set up by the UNESCO in 1995 to encourage people, especially agers, to discover the pleasure of reading. It is also the day to honor great writers, for example, William Shake...
【简答题】______(salary)people who earn more than a few thousand dollars must pay a certain percentage of their salaries.
【简答题】A．The New World monkeys have smaller noses. B．The New World monkeys live in Central and North American. C．All New World monkeys have 32 teeth. D．All New World monkeys can hold things with their tails.
【单选题】What kind of world is created in The Miguel Street?
A.
A world rich in characters with distinct features
B.
A slum
C.
A world full of thieves and villain
D.
A world that centers around the narrator’s family
【单选题】The New World discovered by Columbus was named after __________.
A.
Amerigo Vespucci
B.
Christopher Columbus
C.
Ferdinand Magellan
D.
Marco Polo
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