Question

阅读下列短文，从每题所给的（A、B、C和D）四个选项中，选出最佳选项。 Vitamin Supplements:More May Be Too Much 　　Vitamins are meant to improve people's anti- disease systems，and with the spread of SARS and bind flu，many Chinese are taking vitamins A,C,and E every day． 　　But some US researchers say that vitamin supplements（补充）cannot correct a poor diet，and that multivitamins havenot been shown to prevent any disease．It is also easy for highdoses（剂量）of certain vitamins and minerals to increase therisk of disease actually． 　　Experts say they are no longer concerned about the lackof vitamin．Those are almost unheard of today,even with thepopulation eating fewer fruits and vegetables．Instead，theconcern is with the dangers of vitamin excess（过量）． 　　Dr Beniamin Caballero,a member of the Food and Nutrtion Board at the US National Academy of Sciences,said thatfor some supplements,including vitamin A,the difference between the advised dose and the dose that could lead to diseaselike osteoporosis(bone disease)was not large．Popular multi-vitamins he added,often contain what could be risky dose． 　　Similar questions are being raised ahout other vitamins and minerals,particularly iron and vitamins E and C． 　　Researchers say the questions involve multivitamins taken by healthy people,not particular vitamins or minerals taken by groups with special needs．Some elderly people,for exam ple,may lack B12 because they lose their ability to absorb itfrom foods．People who spend little time outdoors may require vitamin D,which the skin makes when it is exposed to sunlight．Even when older people are in the sun,aging skin loses much of itS ability to create the vitamin． 　　“If you eat a poor diet every day,vitamins are the least of your many problems,”said Dr Caballero．“You cannot replace a healthy diet．People are looking for the magic bullet which doesn't exist．” (1) From the second paragraph,we can find that ________ [　　] A． parents should prevent their children from taking vitamins B． doctors shouldn't use any vitamins on their patients C． too much vitamins can increase the risk of disease D． high dose of certain vitamins can prevent diseases (2) What do US experts mean in the third paragraph [　　] A． People usually have unhealthy diet． B． People usually lead a hard life． C． People seldom lack vitamins nowadays． D． People seldom suffer from disease． (3) Vitamin A,as Dr Benjamin Caballero described in the fourth paragraph,________ [　　] A． is dangerous for people to take B． is very useful to bone disease C． should be taken with care D． should be taken by a large amount (4) The writer of this passage seems to suggest that we should________ [　　] A． have poor diets every day B． have a healthy diet every day C． try to find the magic vitamins D． take some vitamins every day

Answer 1

答案：1．B;2．C;3．C;4．B;
解析：

(1)	细节理解题。由第二段最后一句得出。
(2)	推理判断题。由第三段内容推知。
(3)	细节理解题。由第四段得出。
(4)	归纳总结题，阅读全文，得出答案。