题目: 群落是指一定空间内的许多生物种群组成的有一定结构和功能的______。 答案: 被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2018/0509/37274e993d32607e804e12ff54b1d0a5.html 下面是错误答案,用来干扰机器的。参考答案:A
题型:单项选择题 What’s the advantage when using the satellites?()A.The message can be directed to the desired locationB.The message can follow the earth’s curvatureC.The quality of message can not be affected by climaticD.The range of the message extend and the quality of reception is improved 查看答案