The United States government publishes guidelines for appropriate nutrient intakes. These are known as the Recommended Dietary Allowances (RDAs) and are updated regularly based on new research in nutrition. RDAs are suggested amounts of calories, protein, and some minerals and vitamins for an adequate diet. For other dietary substances, specific goals must await further research. However, for the U.S. population as a whole, increasing starch and fiber in one’s diet and reducing calories (primarily from fats. sugar, and alcohol) is sensible. These suggestions are especially appropriate for people who have other factors for chronic diseases due to family history of obesity, premature heart disease, diabetes, high blood pressure, and high blood cholesterol, or for those who use tobacco.
Snacks can furnish about one-fourth of the calorie requirements am
A. One-half.
B. One-third.
C. One-fourth.
D. Less than one-fourth.
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The United States government publishes guidelines for appropriate nutrient intakes. These are known as the Recommended Dietary Allowances (RDAs) and are updated regularly based on new research in nutrition. RDAs are suggested amounts of calories, protein, and some minerals and vitamins for an adequate diet. For other dietary substances, specific goals must await further research. However, for the U.S. population as a whole, increasing starch and fiber in one’s diet and reducing calories (primarily from fats. sugar, and alcohol) is sensible. These suggestions are especially appropriate for people who have other factors for chronic diseases due to family history of obesity, premature heart disease, diabetes, high blood pressure, and high blood cholesterol, or for those who use tobacco.
Snacks can furnish about one-fourth of the calorie requirements am
A. protein
B. fats
C. starch and fiber
D. sandwiches
[单项选择] American Government The United States is a federal union of 50 states. The capital of national government is in Washington D. C. ( District of Columbia). The federal constitution sets up the structures of the national government and lists its powers and activities. The constitution gives Congress the authority to make laws which are necessary for the common defense and the good of the nation. It also gives the federal government the power to deal with national and international problems that involve more than one state. All powers that are not given to the federal government by the constitution are the responsibility of the individual states. The federal government has three branches - the executive, the legislative, and the judicial. The legislative branch makes the laws, executive branch carries out the laws, and judicial branch interprets the laws. The President heads the executive branch and the Supreme Court heads the judicial b A. The Congress. B. The Federal government. C. The President. D. The Supreme Court.
[单项选择]According to the United States government, people are classified as homeless if they have no place to stay and no expectation of finding a place for the next thirty days. Although technically accurate, that is an impersonal assessment of an enormous and very human problem.
The homeless population represents all of us Americans. It includes men and women, the elderly, children, and infants. Its members are from all ethnic (种族的) groups. What they have in common is poverty.
Currently in the U.S., thirty-nine million people live in poverty. When money is really tight, paying the rent or buying food often becomes a choice. Government assistance in the form of food stamps does help but, as one homeless man explains, you can’’t pay the rent with food stamps.
With no money for rent, the streets and homeless shelters become the alternative.
Although men constitute the largest group within the homeless population, homeless women with children are rapidly joining them. In fact
A. male adults
B. female adults
C. the elderly
D. children
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