题目内容
We all know that certain oils are healthier than others. but your oil health goes beyond just the type.The health of your oil can be related to how you use it too.
Each type of oil has what is called a“smoke point. ”The smoke point is the specific temperature at which the oil starts to break down, or in more technical terms, its molecular structure begins to change. These molecular changes result in;changes in flavor, as well as changes in nutritional value,specifically,the nutritional value of the oil starts to reduce;changing what once may have been considered an especially healthy oil,like Olive,into one that is unhealthy.
The higher an oil’s smoke point is,the higher the temperature of the oil can be.As a result, each type of oil should be used for the cooking method that is most appropriate to its individual smoke point and heat tolerance. Here is a quick guide for the next time you reach for your favorite oil.
Heat During Cooking | Oil | Best Use |
Low to Moderate | Coconut | Baking (low heat ) Light Sauteing Pressure Cooking Salads |
Corn | ||
Olive | ||
Peanut | ||
Sesame | ||
Walnut | ||
Medium Heat | Macadamia Nut | Baking Sauteing Stir-Frying |
Safflower | ||
High Heat | Grape-seed | Deep Browning Deep-Frying |
Sunflower | ||
Soybean/Soy |
Note that the above table represents oils that are refined(精炼的).Most oils we buy are refined.Refined oils tend to have much higher smoke points than when they are unrefined.They also differ in nutrition and flavor.Unrefined oils are more nutritious and they tend to be much richer in flavor.
When it comes to extremely high heat cooking,always choose oils which are refined.
1.What determines whether an oil is healthy or not?
A.Whether it’s refined or not. B.Its smoke point.
C.Its molecular. D.How you use it.
2.Which of the following might be a better choice to make a healthy salad?
A.Refined walnut oil. B.Safflower oil.
C.Unrefined olive oil. D.Sunflower oil.
3.Healthy oil can become unhealthy if. according to the passage.
A.you keep it for too long B.it is heated well beyond its smoke point
C.it is refined D.its flavor is changed
4.The author wants to tell readers that .
A.oils are related to health
B.oils’ value depends on their smoke points
C.“certain oils are healthier”is relative
D.oils’ flavor and nutrition are connected
DCBC
As we all know, language is always changing. In a society where life continues year after year with few changes, the language does not change either. The earliest known languages had difficult grammar but a small, limited vocabulary. Over the century, the grammar changed, and the vocabulary grew. For example, the English and Spanish people who came to America during the sixteenth century gave names to all the new plants and animals they found. In this way, hundreds of new words were introduced into English and Spanish vocabularies. Today life is changing very fast, and language is changing fast too.
There are several major(主要) language families in the world. Some scientists say there are nine main families, but other scientists divide them differently. The languages in each family are connected, and scientists think that they came from the same parent language. About 3 percent of the people in the world speak languages that are not in these major families.
1.The early language had ________.
A.a lot of problems |
B.words and easy grammar |
C.words but no grammar |
D.grammar but not many words |
2.In the next few hundred years we can expect language to _____.
A.stay exactly the same |
B.change a great deal |
C.change only a little |
D.ask more words and drop some grammar |
3.What this article shows is that _____.
A.languages change fast |
B.languages really don't want to change |
C.language really with changes in society |
D.Spanish and English change |