26.合理的晚餐食量一般應占一日三餐總量的（      ）

A.10％                                                        B.20％

C.30％                                                        D.40％

27.能量攝入達到推薦供給量90％時為（      ）

A.超量                                                        B.正常

C.不足                                                        D.嚴重不足

28.下列屬于強酸性食品的是（      ）

A.檸檬                                                        B.葡萄

C.蛋黃                                                        D.葡萄酒

29.食物成分表中出現(xiàn)“…”符號表示（      ）

A.未測定                                                     B.微量

C.未檢出                                                     D.不含有

30.某成人體質(zhì)指數(shù)為24，則他的體重情況屬于（      ）

A.消瘦                                                        B.正常

C.超重                                                        D.肥胖