题目内容：
共用题干School Lunch
Research has shown that over half the children in Britain who take their own lunches to school do not eat______(1) in the middle of the day.In Britain schools have to ______(2) meals at
lunchtime.Children can______(3) to bring their own food or have lunch at the school canteen.One shocking______(4) of this research is that school meals are much healthier than lunches prepared by parents.There are strict______(5) for the preparation of school meals,which have to include one______(6) of fruit and one of vegetables,as well as meat,a dairy item and starchy food like bread or pasta.Lunchboxes______(7) by researchers contained sweet drinks,crisps and chocolate bars.Children______(8) twice as much sugar as they should at lunchtime.
The research will provide a better______(9) of why the percentage of overweight students in Britain has______(10) in the last decade.Unfortunately,the government cannot ______(11) parents, but it can remind them of the______(12) value of milk,fruit and vegetables.Small changes in their children's diet can______(13) their future health.Children can easily develop bad eating______(14) at this age,and parents are the only ones who can______(15) it.
12._________
A:nutritional
B:healthy
C:positive
D:good
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