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【单选题】
最近医学界通过用 14 C标记的C 60 发现一种C 60 的羧酸衍生物，在特定条件下可以通过断裂DNA抑制艾滋病毒的繁殖，则有关 14 C的 不 正确叙述是（ ）A.
14 C与 12 C 60 中碳原子化学性质相同
B.
14 C与 14 N的质量数相同
C.
14 C是 12 C 60 的同素异形体
D.
14 C与 12 C、 13 C互为同位素
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【单选题】Parents should be ____________ in the way they teach their children, so that the children know how to do.
A.
compulsory
B.
complex
C.
convention
D.
Consistent
【简答题】阅读理解。 'I don't like my parents. They always tell me I should do this, and should not do that. It sometimes makes me angry,' said Zhang Hua, a middle school student in Guangzhou. Do you have the same p...
【单选题】What should parents do so that they can earn respect from their kids?
A.
Remind their kids of the family rules.
B.
Punish their kids if they break the rules.
C.
Be strict with their kids.
D.
Follow the same rules.
【简答题】下列关于会计的表述中,正确的有____。 · A会计的职能是指会计在经济管理过程中所具有的功能 · B会计采用一系列专门方法 · C会计是一种经济管理活动 · D会计是一个经济信息系统
【简答题】Guess Number Use Decision & Loops Let user input a number, and then determines whether the number is the number we have given. If yes, the output is "correct", otherwise, the output is "wrong"....
【单选题】From Paragraph 1, we can infer that
A.
the process of doubling the number is gaining ground.
B.
the reality of degree doubling is lagging behind its objective.
C.
the number of skilled workers and teachers has dramatically decreased.
D.
There's a long way for U. S. to strengthen its competitiveness.
【单选题】患者男性 , 15 岁 ,家人诉其近 2 年来逐渐变得少语少动 , 不与人交往,孤僻离群,对亲人冷淡,不讲究个人卫生,常独自发呆自笑。 此患者最可能的诊断是:
A.
抑郁症
B.
孤独症
C.
心境障碍
D.
精神分裂症
【简答题】阅读理解。 'I don't like my parents. They always tell me I should do this, and should not do that, sometimes makes me angry,' said Zhang Hua, a middle sc hool student in Guangzhou. Do you have the same pro...
【简答题】Guess Number Let user input a number, and then determines whether the number is the number we have given. If yes, the output is "correct", otherwise, the output is "wrong"
【简答题】阅读理解。 'I don't like my parents. They always tell me I should do this, and should not do that. It sometimes makes me angry.' said Zhang Hua,a middle school student in Guangzhou. Do you have the same pr...
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