多项选择题

生态养猪业的基本特征应包括( )。 A.
种养结合 B.
健康养殖 C.
环境友好 D.
资源循环、节约高效

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单项选择题

Read the following excerpts from different genres and determine the genres according to the language features. I would like all staff to attend an emergency departmental meeting in the conference room after work. I apologize for the late notice but I’m afraid that we have some very important issues to discuss. Thank you for your understanding. A、grammar textbook B、travel article C、workplace email D、administrative document

单项选择题

安全意识薄弱易引起运动损伤。 A、正确 B、错误

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