在()里填上“+”、“-”、“×”、“÷”。'n7J;H5x:x/m
4(a+N8~6q'A+n7u4=1'n7J;H5x:x/m
3请选择√×)n-a,f+n-N5]7N4n0[3=9'n7J;H5x:x/m
24'r/^6B0~4=6'n7J;H5x:x/m
6请选择×√)U6v.A3N0=0'n7J;H5x:x/m
5/a-b8W2~2|)I3j,Z*u8y:C3W({;\5=10'n7J;H5x:x/m
15:Y0v/^+i1M)Z)z2m+Y9`.H8=7'n7J;H5x:x/m
258y9s8K/?3n4K2a1L8{3W6N-W7d5=20'n7J;H5x:x/m
209E4y8\;k4?3m6P4H8b1u7o4=5'n7J;H5x:x/m