试题 试卷
题型：单选题 题类：常考题 难易度：普通
人教版（PEP）小学英语三年级下册 Unit 3 At the zoo Part A 同步测试（一）
This is a________. It is so________.
—It's ________.
试题篮
{#blank#}1{#/blank#}are in danger．What can we do to protect them?