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【单选题】
《蚀》三部曲包括的三部作品是( )。
A.
《幻灭》《彷徨》《追求》
B.
《幻灭》《动摇》《新生》
C.
《呐喊》《动摇》《追求》
D.
《幻灭》《动摇》《追求》
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【单选题】Coral(珊瑚) is not a plant but a variety of animal life ________ and bright colors.
A.
in different shapes
B.
in a different shape
C.
of different shapes
D.
of a different shape
【单选题】PCR实验延伸温度一般是
A.
94度
B.
60度
C.
72度
D.
55度
【简答题】PCR引物延伸温度一般为
【单选题】PCR延伸温度一般为
A.
55℃
B.
72℃
C.
94℃~97℃
D.
低于引物Tm5℃左右
【单选题】How do fireworks produce their colors? Chemicals that give off bright, distinct colors when burned provide the spectacular colors associated with fireworks. Charcoal and iron, for instance, burn brill...
A.
shells that are put in a launcher
B.
heavenly bodies in the sky
C.
brilliant colors produced by fireworks
D.
compressed chemical powder
【简答题】Bright colors make people happier. They also make people more active.
【简答题】A.94 °C B.85 °C C.50 °C D.72 °C E.100 °C 10.PCR 变性温度一般为:( ) 11.PCR 退火温度一般为:( ) 12.PCR 延伸温度一般为:( )
【单选题】PCR 实验延伸温度一般是
A.
90 ℃
B.
72 ℃
C.
80 ℃
D.
95 ℃
E.
60 ℃
【单选题】(3)The bright colors can make a small room _________ much bigger.
A.
arise
B.
arrange
C.
notice
D.
appear
【简答题】PCR引物延伸温度一般为 查看材料
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