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  3. Chemistry is the study of the behavior andcomposition of matter. All foods a

Chemistry is the study of the behavior andcomposition of matter. All foods a

游客2024-12-17  31
问题    Chemistry is the study of the behavior and
composition of matter. All foods are made up of
chemical  substance which undergoes  chemical
changes when cooking in an oven or digested         【1】______
within  the body.  The cooking of meat and                     
vegetables  induce  chemical  changes,  making      【2】______
it more delicious; similarly the leavening action of【3】______
baking powder is a straightforward chemical change,                    
as is the conversion of starch into sweet sugars                    
by digestion.                                                            
   Cookery is a science requiring for knowledge     【4】______
of chemistry. This is evident from the variety of                    
cooking  products and food additives available                    
as cooking oils, fats, colorings, sweeteners,                     
tenderizers, flavorings, screaming agents, preservatives,                    
etc. Each is carefully prepared before              【5】______
painstaking research.                                       
   It is therefore essential for trained cookers to 【6】______
understand chemical science in order to appreciate                    
the chemistry nature of foods and the changes       【7】______
achieving on cooking. Homeworkers should also       【8】______
know cleansing agents and textiles used in the      【9】______
home and how the latter responds to the effects     【10】______
of heat, light, water, and chemical cleansing agents. [br] 【M6】
选项
答案 将cookers改为cooks。
解析 因为cooker意为“炊事用具”，cook才作“炊事员”讲，例如．The young woman is especially interested in her dinner because she is trying a new kind of cooker-one that gets its heat directly from the sun．这位年轻妇女对这顿饭特别感兴趣，因为她正在试用一种新型的锅灶——一种直接从太阳取得热量的锅灶。Don’t hurry the cook or she’ll spoil the dinner．不要催促厨师，否则她会把饭做坏的。
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