Keeptrying(try) until you find something that helps you most．题目和参考答案——青夏教育精英家教网—

题目内容

15．Keeptrying（try） until you find something that helps you most．

分析继续努力直到你找到对你最有帮助的东西．

解答答案：trying 考查单词填空．根据题干：考查固定短语keep doing sth继续做某事，故要用try的动名词trying尝试．

点评解答此题的关键是根据语境推测要填内容表达的含义，然后能理解各选项内容，有时可能没有必要细细区分每个单词的含义，仅根据句子语气就可以判断出正确答案．

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5．Vitamins are stored in foods we eat．The kids are under great need of vitamins for growth．As they use their energy in playing，they need lots of vitamins．
Children usually choose certain foods above the others and often do not eat those with important nutrients（营养）．So though the food they are eating is nutritious，it may not always provide all the nutrients the child needs．
One nutrient can not balance the shortage（缺乏） of another．Foods like grains，vegetables，fruits and meats should be eaten daily，because different foods in the child's diet can balance against taking too much or too little of any nutrient．
Kids grow slower in their childhood than when they were babies or when they develop into adults．Energy output is high，with hard play periods that include plenty of running，jumping，and testing of new physical skills．So they need a lot of vitamins．
Here are some important vitamins and their functions：
Vitamin D in milk helps your bones．
Vitamin A in carrots helps you see at night．
Vitamin C in oranges helps your body heal if you get a cut．
B vitamins in leafy vegetables helps your body make protein（蛋白质）．
The children，who are suffering from a sickness called cystic fibrosis，lose vitamin A，D and E．These are main body-building vitamins．Therefore，vitamin supplements（添补剂） may be necessary．Blood tests will telll you whether a child needs vitamin supplements．
If babies over nine months of age are receiving whole cow's milk，they'll need a daily vitamin C supplement till their diet provide enough vitamin C．
Vitamin D is added to all milks so babies drinking them need no extra vitamin D．
Children are greatly in need of vitamin C．If you are 18years of age or younger，you should get 115millgrams of vitamin C per day．Those over 19should get 120milligrams per day．

38．We can learn from there passage thatB．
A．it is necessary for one to exercise if he needs more vitamins
B．it is necessary for kids to eat different foods fro all nutrients
C．is it unnecessary for babies to take a vitamin D supplement
D．it is unnecessary for elderly people to take in any vitamins．
39．When do kids have to take a vitamin supplement？C
A．When they are not full of energy．
B．When they eat only some foods．
C．When they don't have normal food．
D．When they suffer from various illnesses．
40．What is it expecially necessary for high school students to have daily？A
A．Orange． B．Milk． C．Carrots． D．Vegetables．
41．The proper title for the passage isA．
A．Vitamins for children
B．Diets of all nutrients
C．Balance of daily diets
D．Functions of vitamins．

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