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 t
the importance of blanching only a few items at a time
D.To show that many people waste food by blanching improperly
3. 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
【07托福考试阅读模拟试题练习（六）】相关文章：
[标签：海外留学,语言考试,托福,,]
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？
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
葛军大爷怒了：高考我出了个小学数学送分题，你们跟我说不会做？
amc传媒音乐影像 第一季 第600集 高中校长演唱《记忆花园》为高考学子助力打气
高考阅卷名师给考生的高考作文密训课 第5集 高考作文审题实操方法精讲（三）
创艺第二届：2019届高考录取表彰大会暨“核桃音乐节”合影——你只管努力，剩下的交给创艺
沈阳音乐学院郎亦农教授的女高音高考曲目解析课程 第9集 《赛吾里麦》演唱讲解，音乐表现一定要自然流畅
