水果店运来8筐苹果,每筐重25千克,运来梨240千克,运来的梨比苹果多多少千克?
240-25×8
=240-200,
=40(千克).
答:运来的梨比苹果多40千克.
–Who can reach the dictionary on the top shelf?
–Susan can. She is ________girl of us all.
A. taller B. a tall C. the tallest
肿瘤坏死因子是常用于治疗肿瘤的药物,下列物质中哪个是肿瘤坏死因子()
A.IFN-r
B.TNF
C.IL-2
D.LT
E.Ab