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2017年CATTI三級(jí)筆譯考試練習(xí)題及答案
第1題
Which of the following is NOT a type of phytoplankton?
A Green algae. B Diatoms. C Blue-green algae. D Amoeba.
【正確答案】：D
【答案解析】 [分析] 是非題型。 見文章第二段第一句：Marine phytoplankton (Greek for "plant wanderers")are microscopic single-celled plants that include diatoms, dinoflagellates, coccolithophorids, green algae, and blue-green algae, among others.說明海洋浮游生物包括：A.Green algae 綠藻;B.Diatoms 硅 藻屬;C.Blue-green algae 藍(lán)綠藻;等等。選項(xiàng) D.“Amoeba 阿米巴蟲”不包 括在內(nèi)，所以是答案。
第2 題
The growth of phytoplankton is often limited by the availability of ______.
A oxygen B hydrogen C nitrogen D carbon dioxide
【正確答案】：C
【答案解析】[分析] 細(xì)節(jié)題型。 見文章第二段第二句：The growth of these organisms, which photosynthesize light, depends on a delicate balance of nutrient enrichment via vertical mixing, which is often limited by the availability of nitrogen and light.所以選項(xiàng) C 正確。
第3題
The main idea of this passage is that ______.
A light causes sea color B sea coloration is varied because of a combination of length of light waves and microscopic plant life and silt C microscopic plant life causes sea color D water composition causes sea color
【正確答案】：B
【答案解析】 [分析] 主旨題型。 閱讀全文得知，海水顏色的變化是由許多因素決定的;包括選項(xiàng) A、C、D， 而選項(xiàng)B 是它們的綜合，所以是答案。
第4題
The United States government publishes guidelines for appropriate nutrient intakes. These are known as the Recommended Dietary Allowances (RDAs) and are updated regularly based on new research in nutrition. RDAs are suggested amounts of calories, protein, and some minerals and vitamins for an adequate diet. For other dietary substances, specific goals must await further research. However, for the U.S. population as a whole, increasing starch and fiber in one's diet and reducing calories (primarily from fats. sugar, and alcohol) is sensible. These suggestions are especially appropriate for people who have other factors for chronic diseases due to family history of obesity, premature heart disease, diabetes, high blood pressure, and high blood cholesterol, or for those who use tobacco. Snacks can furnish about one-fourth of the calorie requirements among teenagers. Those snacks should also provide much of the day's allowances for protein, minerals, and vitamins. Sandwiches, fruit, and milk make good snacks for active teenagers. Food from the food pyramid may be part of any meal. A grilled cheese sandwich or a bowl of whole-grain cereal is just as nutritious in the morning as it is at noon. In addition, a good breakfast consists of any foods that supply about one-fourth of the necessary nutrients for the day. The passage directly states that most of the U.S. population should increase their intake of ______.
A protein B fats C starch and fiber D sandwiches
【正確答案】：C
【答案解析】 [分析] 細(xì)節(jié)題型。 見文章第一段倒數(shù)第二句：However，for the U.S. population as a whole， increasing starch and fiber in one's diet and reducing calories (primarily from fats, sugar, and alcohol) is sensible.選項(xiàng) C 正確。
第5 題
A good breakfast should supply about what percentage of the necessary nutrients for the day?
A One-half. B One-third. C One-fourth. D Less than one-fourth.
【正確答案】：C
【答案解析】 [分析] 細(xì)節(jié)題型。見文章最后一句：„good breakfast consists of any foods that supply about one-fourth of the necessary nutrients for the day. 選項(xiàng) C 正確。
第6題 The passage implies which of the following?
A The time of day when food is consumed affects its nutritive value. B Different foods can be combined to increase total nutrition value. C It can be detrimental to your health to eat breakfast foods later in the day. D When food is eaten has no bearing on its nutritive effects.
【正確答案】：B
【答案解析】 [分析] 推斷題型。本文第一段第一和第三句介紹：美國(guó)政府公布了飲食中合理懾入營(yíng)養(yǎng)的指導(dǎo)，且建議要有合理的熱量、蛋白質(zhì)、礦物質(zhì)和維生素的攝入量;文章第二段第四句 Food from the food pyramid may be part of any meal.說明每頓飯都是由食 物金字塔里的食物構(gòu)成的。由此推出攝取不同的食物可增加營(yíng)養(yǎng)價(jià)值，選項(xiàng)B正確。
第7 題 Why are RDAs regularly updated?
A New discoveries in the science of nutrition are constantly being made. B Americans' diets are constantly changing.
C As people age, their nutritional needs change. D Very little is currently known about nutrition.
【正確答案】：A
【答案解析】 [分析] 細(xì)節(jié)題型。從文章第二句(These are known as the Recommended Dietary Allowances(RDAs)and are updated regularly based on new research in nutrition. )得知 RDAs 會(huì)根據(jù)營(yíng)養(yǎng)學(xué)卜的新發(fā)現(xiàn)經(jīng)常更新推薦的日攝食量。所以“推薦的日攝食量經(jīng)常更新的原因是營(yíng)養(yǎng)學(xué)上經(jīng)常有新的發(fā)現(xiàn)”，選項(xiàng)A正確。
第8 題
In this passage RDAs refers to ______.
A types of vitamins B types of protein C types of minerals D amounts of energy, protein, vitamins, and minerals
【正確答案】：D
【答案解析】 [分析] 細(xì)節(jié)題型。見文章第三句： RDAs are suggested amounts of calories, protein, and some minerals and vitamins for an adequate diet.選項(xiàng) D 正確，選項(xiàng) A、B、C 都不全面。
第9題
One implication in this passage is that ______.
A all RDAs have been established B not all RDAs have been established yet C it's not important to know RDAs D RDAs are necessary only for sick people
【正確答案】：B
【答案解析】[分析] 推斷題型。 見文章第二句：These are known as the Recommended Dietary Allowances(RDAs)and are updated regularly based on new research in 模考吧 www.mokaoba.com nutrition.可知 RDAs 要經(jīng)常更新，所以選項(xiàng)A不對(duì)，選項(xiàng)C、D也披排除：只有選項(xiàng) B 正確。
第10 題
The reduction of calories in the diet is particularly good for people who suffer from ______.
A obesity B premature heart disease and diabetes C high blood pressure and cholesterol levels D all of the above
【正確答案】：D
【答案解析】 [分析] 細(xì)節(jié)題型。 見第一段最后一句：These suggestions are especially appropriate for people who have other factors for chronic diseases due to family history of obesity，premature heart disease, diabetes, high blood pressure, and high blood cholesterol, or for those who use tobacco.選項(xiàng) A、B、C 三個(gè) 選項(xiàng)都提及到，但只有選項(xiàng) D 最全面，所以 D 正確。
第11題 The most popular organic gem is the pearl. A pearl is the response of a marine mollusk to the presence of an irritating impurity accidentally introduced into its body; a cultured pearl is the result of the intentional insertion of a mother-of-pearl bead into a live mollusk. Whether introduced accidentally or intentionally, the pearl-making process is the same: the mollusk coats the irritant with a substance called nacre. Nacre is composed chiefly of calcium carbonate. Because very few natural pearls are now on the market, most pearls used in free jewelry are cultured. These include "Biwa" pearls and most other freshwater pearls. Cultured pearls are not easily distinguished from natural pearls except by an expert. Which of the following people could tell the difference between a cultured pearl and an organic pearl?
A Scuba diver. B Fisherman. C Jeweler. D Clerk.
【正確答案】：C 【答案解析】 [分析] 細(xì)節(jié)題型。 見文章最后一句：Cultured pearls are not easily distinguished from natural pearls except by an expert.只有專家才能區(qū)分出天然珍珠和人工培 育的珍珠。珠寶商當(dāng)然應(yīng)是這類專家，所以選項(xiàng) C 正確。A.Scuba diver 戴水 肺的潛水員 B.Fisherman 漁民和 D.Clerk 職員當(dāng)然不是鑒別珠寶的行家了。
第12 題
What is the chief component of nacre?
A Sand. B Bead. C Calcium carbonate. D Biwa.
【正確答案】：C
【答案解析】 [分析] 細(xì)節(jié)題型。 見文章第四句：Nacre is composed chiefly of calcium carbonate.選項(xiàng) C.Calcium carbonate(碳酸鈣)正確。
第13題 The difference between a pearl and a cultured pearl is the nature of the ______.
A color B introduction of the irritating impurity C coating material D irritating impurity
【正確答案】：B
【答案解析】 [分析] 細(xì)節(jié)題型。 文章第二句(A pearl is the response of a marine„a live mollusk. ) 指出：天然珍珠中的刺激性的雜物是偶然進(jìn)入體內(nèi)的(accidentally introduced into its body);而人工培育的珍珠中的雜物是人為加入的(the intentional insertion);所以選項(xiàng) B 正確。
第14題 Nacre is a substance that is ______.
A mechanically manufactured B the result of laboratory testing C organically secreted by the mollusk D present in the chemical composition of freshwater pounds
【正確答案】：C
【答案解析】 [分析] 推斷題型。 文中第三句(Whether introduced accidentally or intentionally, the pearl-making process is the same: the mollusk coats the irritant with a substance called nacre.)說明無論是天然珍珠還是人工：養(yǎng)殖的珍珠，它們 的形成過程是一樣的：貝類用一種被稱之為珍珠質(zhì)的物質(zhì)將刺激性的雜物包裹 住。由此推斷出珍珠質(zhì) nacre 是貝類 the mollusk 滋生分泌出的，所以選項(xiàng) C 正確。
第15題 The main idea in this passage is that ______.
A most marketable pearls are cultured because nature does not produce enough of its own to satisfy the market B cultured pearls are of a higher quality than natural pearls
C there are two major methods of pearl-making D a natural "drought" of pearl production is taking place
【正確答案】：C
【答案解析】 [分析] 主旨題型。 閱讀全文可知本文介紹了珍珠有天然和人工養(yǎng)殖兩種形成方式，所以選項(xiàng) C 正確。
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