main First Found in American Countries They're in the family of plants that includes morning glories(牽牛花)and are in a different family than yams(山藥).Yams are from Africa and are more closely related to lilies(百合花). | A 5000-Year-Old Food When Christopher Columbus arrived in American countries in the 15th century,sweet potatoes were already a main crop.He took some with him back to Spain and by the 16th century,gardens all over Europe were growing them. |
A Healthy Choice White potatoes may be cheaper than sweet potatoes but sweet potatoes have more nutritonal(營(yíng)養(yǎng)的)value.Also,white potatoes can lead to blood sugar problem and some other health problems. | Health Facts ◆A Rich Source of Beta-Carotene(β-胡蘿卜素) This powerful Beta-Carotene gives sweet potatoes their yellow,gold,or orange coloring and changes to vitamin A in your body.It's thought to reduce the risk of certain types of cancer and provide protection against heart disease. ◆High in Fiber(纖維),Low in Fat Sweet potatoes are high in fiber which is great for health.Also,they contain very little fat. |
分析 文章大意:這是一篇說明文,主要介紹了一些關(guān)于紅薯你可能還不知道的事實(shí).紅薯起源于美洲,有5000年的歷史,紅薯富含β-胡蘿卜素和礦物質(zhì),紅薯富含膳食纖維,對(duì)消化大有健康益處.另外,紅薯還含有很多營(yíng)養(yǎng).
解答 31.答案:C.細(xì)節(jié)理解題.根據(jù)第一個(gè)表格First Found in American Countries首次發(fā)現(xiàn)于美洲國(guó)家.可知,紅薯起源于美洲,選C.
32.答案:A.細(xì)節(jié)理解題.根據(jù)第二個(gè)表格A 5000-Year-Old Food一個(gè)有5000年歷史的食物.可知,紅薯有五千年歷史,選A.
33.答案:D.細(xì)節(jié)理解題.根據(jù)最后一個(gè)表格This powerful Beta-Carotene gives sweet potatoes their yellow,gold,or orange coloring and changes to vitamin A in your body.It's thought to reduce the risk of certain types of cancer and provide protection against heart disease.這個(gè)強(qiáng)大的β-胡蘿卜素給紅薯黃色、金色或橙色的顏色,并在你的體內(nèi)轉(zhuǎn)化成維生素A.有降低患某些癌癥風(fēng)險(xiǎn)的功效,并預(yù)防心臟病.可知,甘薯對(duì)人有益,因?yàn)樗胸S富的β-胡蘿卜素.選D.
點(diǎn)評(píng) 閱讀題型,要注重句子與句子之間、段落與段落之間邏輯關(guān)系以及對(duì)篇章的整體理解.根據(jù)所給問題選擇正確選項(xiàng)完成試題.
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