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【简答题】
原生动物和后生动物在水体自净和污水生物处理中的作用是什么？
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皮皮学刷刷变学霸
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【单选题】---What is _________attract you most when you paid a visit to Beijing the other day? --- The beautiful scenery and being warmly welcomed by the people.
A.
it which
B.
that that
C.
it that
D.
that which
【简答题】A principal decided to honor the teachers in his school to show his appreciation(感激)for their hard work. He told them how they made a difference in their jobs. Then he gave each of them a blue ribbon(...
【简答题】广义安全文化描述正确的包括() A)把“安全”和“文化”两个概念都作广 B)安全不仅包括生产安全，还扩展到生活、娱乐等领域 C)文化的概念包涵了观念文化、行为文化、管理文化等人文方面 D)文化的概念包涵了包括物态文化、环境文化等硬件方面。 E)安全文化是比较狭窄的范畴
【单选题】appreciation
A.
n. [U] (infml.) 聊天；闲谈
B.
a. 惯常的；合乎习俗的
C.
n. [U] 感激；感谢
D.
a. 轻松友好的；不拘礼节的
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