单项选择题
Economy, one of the principles of success in the details of housekeeping, consists not alone (1) making advantageous use of fresh material, but in carefully (2) and utilizing the "left-over" fragments and bits of food. Few cooks can make (3) perfect calculation respecting the needs of their families as to provide just enough and no more, and the waste of the (4) is in many homes fully equal (5) one haft the cost of the meal. (6) anything need ever be wasted. There are ways of utilizing almost every kind of cooked food (7) it will be quite as appetizing and nutritious as when first prepared.
All left-over foods, as grains, vegetables, or others of a (8) character, should be removed to clean dishes. (9) this precaution is observed, the tiny bits about the (10) of the dish, which become sour or moldy much sooner than the larger mass, are apt to (11) the whole. They should also be set on ice or be kept in a cool, dry place (12) needed.
There are (13) other foods that can be combined into more delicious dishes than left- over bread if the bread is properly made from (14) material and is well kept in a proper place. To (15) the perfect preservation of the fragments, the (16) itself should receive good care. Broken pieces of bread may become (17) dry, and in that case, they are (18) to crackers for use in soups. In addition, small quantities of left-over grains can be utilized for preparing various kinds of desserts (19) the ingredients require previous cooking. They may also be used in the preparation of vegetable soups, many of which are even (20) by the addition of a few spoonfuls of well-kept cooked oatmeal or rolled oats.
A. which
B. what
C. where
D. that