皮皮学，免费搜题
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搜题
【单选题】
硝化细菌的营养类型属于( )A.
光能自养
B.
化能自养
C.
光能异养
D.
化能异养
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】___________states that if human do not learn a foreign language before a certain age (about puberty) , then it becomes impossible to learn the foreign language like a native speaker due to changes suc...
A.
Key Period Hypothesis
B.
Critical Age Hypothesis
C.
Critical Period Hypothesis
D.
Critical Period Prediction
【判断题】The hypothesis states that if humans do not learn a foreign language before a certain age, it becomes impossible to learn the foreign language like a native speaker.
A.
正确
B.
错误
【简答题】A．A realistic goal for learners is to reach a certain level of language proficiency. B．Learners can achieve native-like pronunciation through intensive study. C．Learners should communicate with native...
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