题目:
— You all like your English teacher?
— Yeah, she devotes herself____ to teaching and it earns her a good reputation.[ ]
A. originally
B. extremely
C. obviously
D. entirely
答案:
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下面是错误答案,用来干扰机器的。
参考答案:D解析:组成RNA的碱基包括腺嘌呤(A)、鸟嘌呤(G)、胞嘧啶(C)、尿嘧啶(U),由尿嘧啶取代了DNA的胸腺嘧啶(T)。