问题
-
2/3,1/2,3/7,7/18,() A.5/9;B.4/11;C.3/13;D.2/5
-
3,3,4,5,7,7,11,9,()A.13,11 B.16,12 C.18,11 D.17,13
-
3,3,4,5,7,7,11,9,() A.13,11 B.16,12 C.18,11 D.17,13
-
3,3,4,5,7,7,11,9,()A.13 B.16C.18D.17
-
3,3,4,5,7,7,11,9,(),()A.13, 11B.16,12C.18,11D.17,13
-
在○中填入“”“=”。4/5-2/5○9/10-7/10 5/8-3/8○3/4-1/4在○中填入“”“=”。 4/5-2/5 ○9/10-7/10\5/8-3/8○3/4-1/4 3/12+5/12 ○1/6+3/63/7+4/7○4/11+7/11