题目

--Shall we go fishing this weekend? -- _________．I'll go with you． A．Thank you                         B．It's very kind of you C．I have no time                      D．That's a good idea 答案：D使用显微镜观察时，固定装片用到的结构是A．粗准焦螺旋B．压片夹C．反光镜D．细准焦螺旋