在括号里填上适当的单位4p0U+]5X.I.f+V's4R/c
1.小华腰围约60:e0`:K)`3a4p0U+]5X.I.f+V's4R/c
2.牙膏盒的体积约是40)]-\3c(e7t1v4p0U+]5X.I.f+V's4R/c
3. 2.5 （吨） >2.5 1U9v8R0r-\;T >2.5 (E4~7B6D(?4p0U+]5X.I.f+V's4R/c
4. 30 0T6b3M)B7n <30 )K9U0y <30 '^0Z8n:J2B(c <305q(y+i:w,J/w*H9J6o2A;^-I4p0U+]5X.I.f+V's4R/c