真核生物mRNA中5′-末端的m7G余第二个核苷酸之间的连接方式是()
A. 5′→2′
B. 5′→3′
C. 3′→5′
D. 5′→5′
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Dried vegetables are easy to use if you remember to ______ them overnight.
A. plunge
B. soak
C. put
D. immerse
C4植物光合作用固定CO2形成的第一个产物是()
A. 力蛋白
B. 动蛋白
C. 角蛋白
D. 肌动蛋白
Vostok is close to the coldest spot in the world, where an ______ minus 128.6°F was recorded in 1983.
A. unreliable
B. extra
C. incredible
D. impossible
Three weeks after the suicidal bombing, the police were still hunting for bombers for they believe more were ______.
A. on the verge
B. on the sly
C. on the spot
D. on the loose