【题目】 Now, we know that if we do not get enough vitamins, we are at risk of developing a number of diseases. As a______, vitamin supplements（补品）， though expensive, are popular with people who worry that they are not getting enough vitamins. But medical experts have_______little proof（证据） that most supplements do anything to improve health or protect against disease.
In_______, medical experts warn that taking too many of some vitamins can be harmful. For example, too much vitamin E can ___ bleeding. People should discuss what vitamins they take with their doctors, as some vitamins can produce ______effects when mixed with medicine.
Experts, however, say that sometimes vitamins _____help prevent diseases. People who know ______lack a particular vitamin should take vitamin supplements. Some older adults, for example, may not_______enough vitamin Btwelve. This is_______, as people get older, the body loses its ability to take it from food. Also, people who spend much time inside may need some extra vitamin D as the skin makes this vitamin________sunlight.
Different vitamins are found in different ______. Vitamin A is found in fish liver oil. It is also in the yellow part of eggs. Sweet potatoes, carrots and other darkly coloured fruit and vegetables contain substances（物质） that the body can_______into vitamin A. Vitamin B-twelve is found in green leaf________and other food, like fruit. Vitamin K can be________found in pork products.
For most people, a balanced diet can make sure enough of the vitamins our bodies________. So, it is important for us to eat a mixture of food every day to make sure that we get enough vitamins our bodies need.
【1】A.resultB.examC.traditionD.service
【2】A.foundB.madeC.caughtD.served
【3】A.cashB.factC.dangerD.colour
【4】A.chooseB.checkC.causeD.carry
【5】A.harmfulB.helpfulC.hopefulD.careful
【6】A.shouldB.willC.canD.must
【7】A.theyB.sheC.heD.it
【8】A.startB.changeC.haveD.think
【9】A.ifB.becauseC.sinceD.when
【10】A.inB.onC.atD.from
【11】A.placeB.foodC.styleD.form
【12】A.changeB.breakC.throwD.look
【13】A.noodlesB.milkC.vegetablesD.meat
【14】A.secretlyB.proudlyC.naturallyD.easily
【15】A.needB.spreadC.startD.leave
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