5.WHEN WILL EDUCATION FINISH

16. 5.When will education finish? A. whenever one leaves school B. when one gets old C. education will never finish D. at the end of the school yearV. Read the text carefully and decide which answer ( A, B, C or D) best fits each space: A vitamin is a complex substance that is important………(1) human body for………(2)and growth. The human body makes some vitamins………(3) but it is not enough. Other vitamins are not made in the body at tall and must be……(4). The continued lack of one vitamin that is caused by a certain diet results in a deficient disease. The best way to obtain vitamins is to eat foods………(5) they occur naturally. There are also tablets that contain a pure single vitamin. ……(6), we should ask a doctor before ……(7)them. Up to now, scientists…….(8)about 25 different vitamins…….(9)are very important to the nutritional need of human beings. It is believed that further research will surely find out…(10) more vitamins.