食品冻结与解冻的合理工艺是（）
A.急冻急化
B.急冻缓化
C.缓冻急化
D.缓冻缓化
E.以上全不对
参考答案：B
Nowadays, a growing group of dieters are trying extreme calorie _____ for a long life by eating less food.
A．reservation
B．restriction
C．distinction
D．discrimination
缺铁性贫血需注射铁剂的指证为
A．口服铁剂两周，血红蛋白未上升B．病人不愿口服铁剂C．合并有巨幼红细胞贫血者D．原有胃肠道疾病，致铁吸收障碍者E．慢性失血者，如月经过多
