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【多选题】
PCR 的基本原理是:A.
A以拟扩增的DNA分子为模板,
B.
B以一对分别与模板互补的寡核苷酸片段为引物,
C.
C在DNA聚合酶的作用下,按照半保留复制的机制沿着模板链延伸直至完成新的DNA合成,
D.
D不断重复这一过程,因为新合成的DNA也可以作为模板,因而PCR可使DNA的合成量呈指数增长。
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举一反三
【简答题】碳水化合物的供给量应占总能量的_____。
【单选题】Shall we go on a picnic tomorrow?
A.
_If weather permits,we shall go.
B.
We will see.
C.
That depends.
D.
Sure.
E.
I don't know.
【简答题】RFID射频识别技术按应用频率分为________、________、________、________四种。
【单选题】Please skim Part 3 (Para. 8 ~ Para 11) and answer this question. According to the author, what contributes to his love for his work?
A.
His passion for his work
B.
His talent
C.
His hard work
D.
As he worked hard, he became more competent. As a result, his engagement in his work grew.
【简答题】合理情绪疗法中的合理自我分析报告(RSA技术)与RET技术的区别是（ ）。
【单选题】神经衰弱
A.
常有感知、思维、情感、行为等多方面的障碍和精神活动不协调
B.
情绪低落为基本症状
C.
毫无根据地紧张、害伯伴有自主神经功能紊乱症状
D.
易疲劳、睡眠障碍伴自主神经功能紊乱症状
E.
意识丧失，全身抽搐
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