题目

单位换算1米=分米3分米=厘米40毫米=厘米100毫米=分米    6分米=毫米  70分米=米4米-2分米=分米 35厘米+25厘米=分米 答案：【1】10【2】30【3】4【4】1【5】600【6】7【7】38【8】6 A great deal of money has been contributed by many warm-hearted people to________homeless people． [　　] A．help B．helped C．helping D．helpful