词汇：arctic, snow, ice, seal等 — 英语词汇题
题目
根据中文提示补全单词。1. An Arctic fox lives on the ice and s___w in the north.（雪） 2. The s___l swims in the cold sea.（海豹） 3. Winter in the A___ctic is long and cold.（北极的） 4. Water becomes i___ when it is very cold.（冰）