2015潍坊测试卷
A
Many parents think they are doing the best for their children by having them bring lunch from home instead of eating the lunches served in schoo1．But recent studies clearly prove them wrong.
Home-packed lunches，the research showed，are likely to be much less nutritious than meals offered in schools that go by current nutrition guidelines for the National School Lunch Program．
That program is，however，increasingly under attack．The requirements for less salt and only whole grains were already changed in the final federal spending bill approved by the Senate on Dec.13.But the program must not continue to be weakened，and more schools should be encouraged to participate .Nearly 32 million of the more than 50 million children in public elementary and secondary schools eat school lunches，most of them provided through the program .For about 60 percent of those children, half or more of their daily calories(卡路里)are consumed at lunch. Those numbers along with the recent finding on meals brought from home，make the contents of lunches served in school especially important to the health of America’s children，now and in the future .
One study ，conducted in 12 elementary and intermediate schools in Houston，found that compared with what is served in school，lunches brought from home contained fewer serving of fruits，vegetables，whole grains and milk than the national program requires .Packed lunches also contained more desserts，chips and sweetened nondairy drinks，none of which can be served by schools that participate in the federal program.
21.What do the recent studies find?
A.Lunches from home do good to children.
