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【判断题】
里奇和奥格尔认为,生命起源的化学演化实质是核酸分子的形成与演化,因此核酸首先起源,它控制着蛋白质的合成。A.
正确
B.
错误
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举一反三
【单选题】She has found _____ at last.
A.
content
B.
contentment
C.
contended
D.
Discontentment
【单选题】Rebecca found life on Everest is hard because ______.
A.
she has nothing but a toothbrush
B.
she is a clean person
C.
everything that is needed has to be carded on the back
【单选题】Rebecca found life on Everest is hard because ______.
A.
she has nothing but a toothbrush
B.
she is a clean person
C.
everything that is needed has to be carried on the back
【简答题】A．She has already found her topic. B．She won't sleep tonight so as to figure out her topic. C．She is going to have a sound sleep tonight. D．She will think about her essay tomorrow.
【简答题】历史上的“三八线”指的是领土上的什么线?
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