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【题目】Vitamins are complex chemical substances 【1】 (find) in many foods. The human body needs them for health and 2 (grow). The body makes some vitamins, but usually in amounts too small to meet its needs. 3 vitamins are not made in the body. These must __4_(supply). No one knows 5 (exact) how all vitamins work. Doctors do know that vitamins have very special uses. 6 , One vitamin cannot take the place of another. The steady absence of one vitamin causes a deficiency disease. Rickets, scurvy, and pellagra are examples_7__ deficiency diseases.

It is best to get vitamins 8 eating the foods in which they occur. There are also pills that contain a single vitamin _9_a combination of vitamins. People should ask their doctors_【10__they take any vitamin pills.

【答案】

【1】found

【2】growth

【3】Other

【4】be supplied

【5】exactly

【6】Therefore

【7】of

【8】by

【9】or

【10】before

【解析】

试题分析:维生素是一种复杂的化学物质。人体需要维生素来健康成长,那么人体通过什么来摄取维生素呢?其实在吃各种食物时就可以摄取维生素了。还有人服用维生素片,这时候要先咨询医生啊。

【1】found 考查非谓语动词。本句考查非谓语动词担当后置定语,此时与所修饰词substance之间存在被动关系,故填found。句意为:维生素是一种复杂的化学物质,它可以在很多事物中被发现。

【2】growth 考查名词。根据and之前的health可知此处需要名词,故填growth。句意为:人体需要维生素才能获得健康和成长。

【3】Other 考查代词。根据前文的The body makes some vitamins可知身体自己能制造出一些维生素,那么还有一些就不是身体制造出的。故填other,表示其他维生素不是身体制造的。

【4】be supplied 考查动词。根据上文可知,有些维生素身体不制造,那么自然要外部提供。维生素被提供,故用被动语态,填be supplied。

【5】exactly 考查副词。本句考查副词担当状语,故填exactly。句意为:没有人确切地知道所有的维生素是怎样运作的。

【6】Therefore 考查副词。前一分句意为:医生知道维生素有特别的用处。后一分句意为:一种维生素不能代替另一种维生素。两句之间存在因果关系,再加上之后的逗号,故填副词therefore。注意首字母大写。

【7】of 考查固定搭配。本句考查固定搭配:the example of,意为:的例子。故填of,句意为:软骨病、坏血病和糙皮病都是营养缺乏症的例子。

【8】by 考查介词。根据句意可知此处填by,意为通过。句意为:通过饮食来摄取维生素是最好的方式。

【9】or 考查连词。根据空前的a single vitamin以及空后的a combination of vitamins可知,填or,意为:有的药片含有单一的维生素或许多维生素结合在一起。

【10】before 考查连词。前一分句意为:人们应该问医生;后一分句意为:他们吃任何一种维生素片。根据常识填before,指在吃药之前询问医生。

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