Protect Wild Animals

    Animals are our good friends．We live in the same Earth．Animals and people can't  be separated from each other．But some animals are getting less and less．So it's important to us to protect animals，especially wild animals．Some people kill wild animals because of money．It's wrong．Now people need more places to live in．We explore the forest．  Animals have less places to live in．The number of wild animals decreases year by year．So we should protect wild animals．

一个国家在工业发展的初步阶段或经济不景气的时候，往往出台贸易保护的政策或举措。以下政策或举措中不属于贸易保护性质的是（）

—Did Kate do best in the final exam?

—No, but of all the students she did _______.

用长4厘米、宽3厘米的长方形，照下图的样子拼成正方形．拼成正方形的边长最小是____厘米？