-53=-75,-62=-72,
∴-75<-72,
∴-53<-62.
故答案为<.
He has limited himself ______ 2,200 calories per day to try to keep fit. [ ]
A. in
B. for
C. to
D. on
流行性腮腺炎最主要的病理特征是()
A.腮腺呈囊性变
B.非化脓性腮腺炎
C.腮腺及周围组织充血、水肿
D.腮腺管细胞坏死、脱落
E.腮腺导管化脓、水肿