已知一个梯形的面积是58平方厘米，它的上底是15厘米，下底是25厘米，它的高是多少厘米?
Therearetwo_____inourschool
A、library
B、libraries
C、librarys
fox，wolf，friends，and，are
_________________________________
A、somethingtoeat
B、toeatsomething
C、somethingeat
D、eatsomething
Look!Lucyis______anewreddress.Sheisbeautifultoday.
A、with
B、puton
C、in
D、wear