单选题 Practically all species of animals communicate either through sounds or through soundless codes.
A. Simultaneously B. Almost C. Absolutely D. Basically

【正确答案】 B
【答案解析】此句中的practically和almost同义，意为“几乎、差不多”；simultaneously：同时地；absolutely：完全地、绝对地；basically：基本上、主要地。