【正文】 of the following statement will Paul Behrens approve of? A.Following a nationally remended diet can have similar impacts in different countries.B.Following a nationally remended diet can do good to our health.C.Not all the countries have remended diets in an explicit manner.D.Some high173。ine nations don39。t mention the diet explicitly for its impacts can be ignored.（2）What do the underlined words takes a big toll on in paragraph 3 probably mean? A.shows signs ofB.has a bad effect onC.takes full advantage ofD.makes up for（3）Which of the following is TRUE according to the passage? A.Food production can lead to about 20 percent of human173。caused greenhouse gas with only a third of the ice173。free land used.B.It is estimated that following dietary guidelines can lead to decrease in more land use than in nutrient pollution.C.Paul Behrens39。 new program concerning healthy eating for schools is likely to be based on national nutrition guidelines.D.Some wealthy countries tend to reduce meat and dairy though the other areas of policy making isn39。t effected much.【答案】 （1）C（2）B（3）A 【解析】【分析】本文是一篇說明文，介紹了營養(yǎng)指南對地球也有利。通過膳食指南，似乎可以減輕對環(huán)境的傷害，人類自己也可以過上健康的生活，二者可以兼得。 （1）考查推理判斷。根據(jù)第二段中的 What we found is that impacts vary across nations, but in the high173。impact nations, in general, you can see that, if you follow a nationally remended diet, despite the fact that these diets don39。t mention explicitly—or most of them don39。t explicitly mention—environmental impacts, that you are going to have lower environmental impacts due to that.” 我們發(fā)現(xiàn)（營養(yǎng)膳食指南的）影響因國家而異，但總的來說，在影響力較大的國家，如果你遵循國家推薦的膳食指南，即使這些膳食并未明晰對環(huán)境的影響，或者大多數(shù)膳食沒有明確說明這一點(diǎn)，但是你對環(huán)境的影響會因為遵循指南而減輕。由此推斷出 并非所有國家都以明確的方式推薦飲食 ，這個觀點(diǎn)Paul Behrens會贊成，故選C。 （2）考查詞義猜測。根據(jù)第三段中的“A third of the ice173。free land on Earth is used for agriculture, and according to some estimates, producing food accounts for roughly a fifth of all human173。caused greenhouse gas emissions. Fertilizer runoff also leads to other problems, like the algae blooms in Lake Eerie and the Dead Zone in the Gulf of Mexico.”地球上三分之一的無冰區(qū)被用于農(nóng)業(yè)生產(chǎn)，根據(jù)一些估算，食物生產(chǎn)大約占到了人類造成的溫室氣體排放量的五分之一。肥料徑流也導(dǎo)致了其他問題，例如伊利湖的藻類爆發(fā)以及墨西哥灣的死亡區(qū)域。由此推斷出劃線詞所在的句子意思是我們所吃的食物給環(huán)境帶來了巨大代價。takes a big toll on固定短語，“付出了巨大的代價”，故選B。 （3）考查細(xì)節(jié)理解。根據(jù)第三段中的“A third of the ice173。free land on Earth is used for agriculture, and according to some estimates, producing food accounts for roughly a fifth of all human173。caused greenhouse gas emissions.”地球上三分之一的無冰區(qū)被用于農(nóng)業(yè)生產(chǎn)，根據(jù)一些估算，食物生產(chǎn)大約占到了人類造成的溫室氣體排放量的五分之一。由此可知。A選項的描述 糧食生產(chǎn)可導(dǎo)致約20%的人為造成的溫室氣體，而只使用了三分之一的無冰土地 正確，故選A。 【點(diǎn)評】本題考點(diǎn)涉及細(xì)節(jié)理解，詞義猜測和推理判斷三個題型的考查，是一篇科研類閱讀，要求考生準(zhǔn)確捕捉細(xì)節(jié)信息，同時根據(jù)上下文進(jìn)行邏輯推理，從而選出正確答案。8．犇犇Choose the one that fits best according to the information given in the passage you have just read. Studies show that older people tend to remember the positive things in life rather than the negative things, while younger people remember the positive and negative equally well. The dominant psychological theory to explain this is that older people are aware of their limited time left, so they prioritize positive emotional experiences. But about a decade ago, I worked with biologist Robert Trivers on his idea that there was an evolutionary basis for older people39。s increased positive outlook. Our research took us in the fascinating direction of exploring how the body uses its energy. When our ancestors needed more energy than usual, perhaps while being chased by a tiger, they had to get that energy from somewhere in the body. Could they borrow it from the brain? That organ uses 20 percent of our metabolic (新陳代謝) output, whether we are solving math problems or watching television reruns. Due to this constant energy requirement, borrowing energy from the brain when our need surpasses the available supply is not an option. Perhaps we could borrow energy from our muscles. Because we use far more muscle energy when we are active than when at rest, in principle, we could borrow energy when we are sitting. But the problem is that most of the energydemanding emergencies of our ancestors required a muscular response. There was no way to borrow energy from our muscles during an emergency because relaxing when a tiger showed up was not an effective response. This brings us to our immune system, which, when strong, protects us from many illnesses and diseases. Like the brain, the immune system works at great metabolic cost, but largely in the service of keeping us healthy in the future. We have an enormous number of immune cells coursing through our body, a momentary break from production is fine. So, when our body needs extra energy, one of the places it goes is our immune function. When you39。re being chased by a tiger, you don39。t need to waste energy making immune cells to fight off tomorrow39。s cold. What you need is to shift all available energy resources to your legs, with the hope that you will live to experience another cough or sneeze. As a result, our immune system evolved to run in maximum amounts when we39。re happy, but to slow down dramatically when we39。re not. With this background in mind, Trivers supposed that older people evolved a strategy of turning this relationship on its head, being more focused on the positive things in life in an effort to enhance their immune functioning. This was helped along by their knowing much more about the world than younger adults, so they can deal with some of the unpleasant things in life more easily.（1）According to Robert Trivers, when our body needs extra energy, ______. A.muscles will respond to it by relaxing a little bitB.organs will speed up metabolic processes to answer itC.immune system will temporarily shut down to fulfill itD.brain will satisfy it by sharing optional metabolic output（2）In paragraph 3 this relationship most probably refers to the one between ______. A.experiences and related knowledgeB.happiness and biological evolutionC.immun