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基于石墨烯的农残检测无酶电化学传感器的研制.pdf

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基于石墨烯的农残检测无酶电化学传感器的研制.pdf

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基于石墨烯的农残检测无酶电化学传感器的研制.pdf

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文档介绍:+第十一篇 School Lunch 学校午餐
Research has shown that over half the children in Britain who take their own lunches to school do not eat properly in the middle of the day. In Britain schools have to provide meals at lunchtime. Children can choose to bring their own food or have lunch at the school canteen.
One shocking finding of this research is that school meals are much healthier than lunches prepared by parents. There are strict standards for the preparation of school meals, which have to include one portion of fruit and one of vegetables, as well as meat, a dairy item and starchy food like bread or pasta. Lunchboxes examined by researchers contained sweet drinks, crisps and chocolate bars. Children consume twice as much sugar as they should at lunchtime.
The research will provide a better understanding of why the percentage of overweight students in Britain has increased in the last decade. Unfortunately, the government cannot criticise parents, but it can remind them of the nutritional value of milk, fruit and vegetables. Small changes in their children's diet can affect their future health. Children can easily develop bad eating habits at this age, and parents are the only ones who can prevent it.
+第十二篇 A Powerful Influence 强大的影响
There can be no doubt at all that the has made a huge difference to our lives. Parents are worried that children spend too much time playing on the , hardly ever doing anything else in their spare time. Naturally, parents are curious to find out why the is so attractive, and they want to know if it can be harmful to their children. Should parents worry if their children are spending that much time staring at puters?
Obviously; if children are bent over puters for hours, absorbed in some game, instead of doing their homework, then something is wrong. Parents and children could decide how much use the child should make of the , and the child should give his or her word that it won’t interfere with homework. If the child is not holding