【題目】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】

試題分析：維生素是一種復(fù)雜的化學(xué)物質(zhì)。人體需要維生素來(lái)健康成長(zhǎng)，那么人體通過(guò)什么來(lái)攝取維生素呢？其實(shí)在吃各種食物時(shí)就可以攝取維生素了。還有人服用維生素片，這時(shí)候要先咨詢醫(yī)生啊。

【1】found 考查非謂語(yǔ)動(dòng)詞。本句考查非謂語(yǔ)動(dòng)詞擔(dān)當(dāng)后置定語(yǔ)，此時(shí)與所修飾詞substance之間存在被動(dòng)關(guān)系，故填found。句意為：維生素是一種復(fù)雜的化學(xué)物質(zhì)，它可以在很多事物中被發(fā)現(xiàn)。

【2】growth 考查名詞。根據(jù)and之前的health可知此處需要名詞，故填growth。句意為：人體需要維生素才能獲得健康和成長(zhǎng)。

【3】Other 考查代詞。根據(jù)前文的The body makes some vitamins可知身體自己能制造出一些維生素，那么還有一些就不是身體制造出的。故填other，表示其他維生素不是身體制造的。

【4】be supplied 考查動(dòng)詞。根據(jù)上文可知，有些維生素身體不制造，那么自然要外部提供。維生素被提供，故用被動(dòng)語(yǔ)態(tài)，填be supplied。

【5】exactly 考查副詞。本句考查副詞擔(dān)當(dāng)狀語(yǔ)，故填exactly。句意為：沒(méi)有人確切地知道所有的維生素是怎樣運(yùn)作的。

【6】Therefore 考查副詞。前一分句意為：醫(yī)生知道維生素有特別的用處。后一分句意為：一種維生素不能代替另一種維生素。兩句之間存在因果關(guān)系，再加上之后的逗號(hào)，故填副詞therefore。注意首字母大寫(xiě)。

【7】of 考查固定搭配。本句考查固定搭配：the example of，意為：…的例子。故填of，句意為：軟骨病、壞血病和糙皮病都是營(yíng)養(yǎng)缺乏癥的例子。

【8】by 考查介詞。根據(jù)句意可知此處填by，意為通過(guò)。句意為：通過(guò)飲食來(lái)攝取維生素是最好的方式。

【9】or 考查連詞。根據(jù)空前的a single vitamin以及空后的a combination of vitamins可知，填or，意為：有的藥片含有單一的維生素或許多維生素結(jié)合在一起。

【10】before 考查連詞。前一分句意為：人們應(yīng)該問(wèn)醫(yī)生；后一分句意為：他們吃任何一種維生素片。根據(jù)常識(shí)填before，指在吃藥之前詢問(wèn)醫(yī)生。

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