At present, some primary and secondary schools in our city are carrying out the "Sunshine Canteen" project. The following table shows some recipes for having lunch in the school cafeteria one day. The staple food is vegetarian food. (1) Braised beef; Stir-fried carrots and cucumbers; Sugar. (2) Iron deficiency anemia.

(3)C(4)B

(1) Meat is rich in protein; Vegetables contain vitamins; There is sugar in rice;

So the answer is: braised beef; Stir-fried carrots and cucumbers; Sugar.

(2) Adding iron fortifier to soy sauce to prevent iron deficiency anemia;

So the answer is: iron deficiency anemia.

(3)A, moldy rice is inedible, so A is wrong;

B, moldy rice can't be eaten after cooking, so B is wrong;

C, moldy rice is absolutely inedible, so C is correct.

So choose C.

(4) A. Supplementing coarse grains in staple food is beneficial to health, and the suggestion is reasonable; B, provide more fried food, which is not conducive to health, so the suggestion is unreasonable; C. Appropriate provision of fruit is beneficial to health, so the suggestion is reasonable.

So choose B.