来自：查字典高考网 2014-12-25
FREEZING FOOD
The discovery of freezing has changed our eating habits more than any other related invention. Because many foods contain large amounts of water， they freeze solidly at or just below 32 degrees Fahrenheit. When we lower the temperature to well below the freezing point and prevent air from penetrating the food， we retard the natural process of decay that causes food to spoil. Freezing preserves the flavor and nutrients of food better than any other preservation method. When properly prepared and packed， foods and vegetables can be stored in the freezer for one year.
Most vegetables and some fruits need blanching before they are frozen， and to avoid this step would be an expensive mistake. The result would be a product largely devoid of vitamins and minerals. Proper blanching curtails the enzyme action， which vegetables require during their growth and ripening but which continues after maturation and will lead to decay unless it is almost entirely stopped by blanching. This process is done in two ways， either by plunging vegetables in a large amount of rapidly boiling water for a few minutes or by steaming them. For steam blanching， it is important that timing begin when the water at the bottom of the pot is boiling. Different vegetables require different blanching times， and specified times for each vegetable must be observed. Under-blanching is like no blanching at all， and over-blanching， while stopping the enzyme action， will produce soggy， discolored vegetables.
1.Why does the author mention 32 degrees Fahrenheit？
A.To suggest the storage temperature for most foods
B.To identify the freezing point of water
C.To state the correct setting for a freezer
D.To give the temperature for blanching
2.Why does the author use the term expensive mistake in discussing blanching？
A.To state that blanching is expensive but very effective
B.To warn that not blanching will harm the foods nutritional value
C.To emphasize the importance of blanching only a few items at a time
D.To show that many people waste food by blanching improperly3. In our daily life， there are a lot of traditional and scientific methods to maintain the foods nutrients， please write an essay to introduce the process of one way.
答案：
１.Ｂ２.Ｂ
【2007托福考试阅读模拟试题练习（六）】相关文章：
[标签：海外留学,考试,托福,,]
张雪峰高考志愿填报指南 第15集 高考填报志愿，想学电子信息类专业，推荐报这六所高校，不出错
学渣儿子高考，英语选择题全选B！老师通报成绩的那一刻父亲懵了
优秀！英语数学双满分，广西“最牛”高考状元730分刷新最高纪录
广州早晨 2019 山西一高中班主任带学生骑行1800公里去上海
NBA流言收割机 第6集 神预测？高考数学试题暗示猛龙勇士4
乾坤已定，组合解读2019高考数学全国3卷理科18题，你是黑马吗？
1000张学生用草稿纸考研专用免邮空白便宜薄演草演算纸白纸本书写纸批发打草a4大张实惠装18k高考数学草稿本
探秘历史 第二季 第233集 考英语用来睡觉，结果仍是高考状元，如今她怎么样了？
2019全国高考志愿填报攻略 第50集 天津市高考历史三年本科录取排名
