单项选择题

泄殖腔周围有粪污，说明（） A.
腹泻 B.
便秘 C.
正常 D.
缺水

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多项选择题

运用Excel可实现哪些数据处理方法（）？ A. 筛选 B. 排序 C. 汇总 D. 绘制图表

问答题

Choose those that are connotations of the word ocean . A、a large body of salt water that covers approximately 70% of the earth’s surface B、appears different shades of blue C、often with waves and currents D、contains various types of plant and marine animal life E、peace F、tranquility G、expansiveness H、the unknown I、the power of nature

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