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The same principles of education, prevention and early treatment can apply to mental health as well. One in 20 Americans over age 12 reported feeling depressed in 2006, with non -Hispanic blacks making up the largest percentage. Although 80% of Americans admitted that their symptoms interfered with their ability to work, only 29% had contacted a mental - health professional. Recent improvements in screening at primary -care facilities, one of the goals set by Healthy People 2010, may help address this problem: while 62% of primary - care facilitiesprovided treatment for mental disorders in 2000, 74% do so now. Which of the following is true

A. 74% of primary - care facilities provided treatment for mental disorders in 2006.
B. 5% Americans over age 12 said they felt depressed in 2006.
C. 80% of Americans with mental problems consulted mental--health professionals.
D. 29% of Americans reported interference of their symptoms with their work.

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A co - worker of mine recently recommended to do some research online before making my next purchase. As an elementary school teacher with a modest salary and a sizeable mortgage, cost was a major concern. While searching the Web I found a few online teeth whitening companies giving away free trials where you only had to pay a few dollars for shipping. I ordered two products, Dazzle White and Total White, both of which had 9/10 ratings and positive feedback from all users. After using the first product the results were noticeable, but after following with the second product I had a celebrity white smile. I’m far from a medical expert, but it appears that each product focused on DIFFERENT parts of the problem and that the second one put the whitening effect into overdrive. By using them both in a row I had absolutely unbelievable results. I can’t believe companies are practically giving these products away! What is the economic status of the elementary school teacher

A not big salary with a great mortgage.
B. Avery small salary to buy anything fancy.
C. A not big salary with a moderate mortgage.
D. A good salary with a great mortgage.

简述简单的I/O接口芯片与可编程芯片的区别。

According to news reports, US restaurants are partly to blame for the growing bellies. Awaiter puts a plate of food in front of each customer, with two to four times the amount recommended by the government, according to a USA Today story. Americans traditionally associate quantity with value and most restaurants try to give them that. They prefer to have customers complain about too much food rather than too little. Barbara Roils, a nutrition professor at Pennsylvania State University, told USA Today that restaurant portion sizes began to grow in the 1970s, the same time that the American waistline began to expand. The average waistline of Americans started to grow

A. two or three years ago.
B. in the 1970s.
C. about four years ago.
D. since last year.

简述PCI总线的特点。

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