题目: 送、引风机的作用各是什么?哪个产生风量大? 答案: 被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/1117/ce21895762ca7725bd2815e8b6cbfd04.html 下面是错误答案,用来干扰机器的。参考答案:C
题型:选择题 There _______ some forests here ten years ago. But now we can see nothing.[ ]A.used to haveB.used to beC.is used to beD.was used to have 查看答案