【正文】 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 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.D.Age, health and happinessC.十年前作者與生物學家羅伯特根據(jù)第三段中的 being more focused on the positive things in life in an effort to enhance their immune functioning. 可知老人們更加關注生活中積極的事物，是為了增強他們的免疫功能。 （4）考查主旨大意。 s energy and then releases it as heat to make the ice on the windshield disappear. ”想象一下你的衣服可以釋放足夠的熱量讓你溫暖和舒適，讓你可以在冰冷的房間里保持舒適。故選A。Some people sit outside for hours without getting bitten by mosquitoes, but it always seems like you39。 Mosquitoes are especially active in the late afternoon. While flying along, they use their sense of smell to find possible targets. They find victims (攻擊對象) by smelling the carbon dioxide (CO2) breathed out by humans and animals. That39。 mouths water? （3）考查細節(jié)理解。 （1）考查推理判斷。s energy through a chemical reaction and releasing it later as heat.Imagine your clothing could release enough heat to keep you warm and cozy, allowing you to stay fortable in a cooler room. Or, picture a car windshield that stores the sun39。由此推斷，消極會消耗我們身體的能量，降低對疾病的抵抗力。選C。D.Being negative drains energy from our body, lowering resistance to disease.（4）Which of the following is the best title of the passage? A.immune function and health As a result, our immune system evolved to run in maximum amounts when we39。 （4）考查主旨大意。t a new one.”引人注目的顏色可以用來偽裝，這種想法并不新鮮，排除C，故選D。Metallic iridescent as the best disguiseC.A famous camouflage strategyBees can always tell the difference between a circle and an ovalB.s concealment？ The idea that eye173。 Shining iridescent color, which changes depending on the angle from which it39。A選項的描述 糧食生產可導致約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。肥料徑流也導致了其他問題，例如伊利湖的藻類爆發(fā)以及墨西哥灣的死亡區(qū)域。impact nations, in general, you can see that, if you follow a nationally remended diet, despite the fact that these diets don39。It is estimated that following dietary guidelines can lead to decrease in more land use than in nutrient pollution.C.Some high173。schools program then that39。s team estimates that following the rules could result in as much as a 17 percent reduction in land use, a 21 percent reduction in nutrient pollution, and a 25 percent drop in agricultural greenhouse gas emissions. Cutting down on how much food we waste—which is roughly a third in the US—could help even more. The results are in the Proceedings of the National Academy of Sciences.t explicitly mention—environmental impacts, that you are going to have lower environmental impacts due to that. So that39。 You know those nutrition guidelines the government issues every few years? It turns out that following them isn39。在大型公共場所，很難像機場那樣設置昂貴的安檢設施。 （1）考查段落大意。Confirming.It saves people in danger of natural disasters.B.s hard to set up expensive screening equipment like what39。 The detection system analyzes what happens when wireless signals go through and bounce off objects or materials. The approach, which the paper states, works by separating the wireless interference(干擾)caused by two factors of objectsthe material and shape. Most dangerous objects such as weapons are usually metal or liquid, which have significant interference, researchers said.故選C。Many creatures living in deep water will die out due to climate change.D.The A68 iceberg with the ecosystem beneath it.D. There is growing concern about the possible impact of climate change in the Antarctic. Earlier this month, a report revealed that melting ice sheets in Greenland and Antarctica are speeding up the already fast pace of the sea level rise. The research, published by the National Academies of Science, Engineering and Medicine, said, At the current rate, the world39。s biggest iceberg in a mission aiming to answer fundamental questions about the impact of climate change in the polar regions. The scientists, led by the British Antarctic Survey (BAS), are trying to reach a newly revealed ecosystem that had been hidden for 120,000 years below the Larsen C ice shelf.To study a newly discovered ecosystem.C.It is part of an ice shelf in the Arctic.C. （1）考查細節(jié)理解。 （4）考查推理判斷。 When it was tested on a backpack, the accuracy rate topped 95 percent. But the accuracy dropped to about 90 percent when objects inside bags are wrapped. And the tech could save lives if used in museums, stadiums, theme parks or schools, the team said, noting its design can inspect bags or luggage without being an exposure to privacy. signals.D.B. （2）考查細節(jié)理解。根據(jù)最后一段中的“Future work will continue to focus on ameliorating the accuracy of identifying objects and imaging shapes and volumes”今后的工作將繼續(xù)側重于提高識別物體和成像形狀及體積的準確性，故選B。s partly due to cow farts. Seriously.) Following the suggestions would also mean eating fewer calories, since many people here eat more than they need. Of course, people are notoriously bad at following diets. But: These nationally remended guidelines do actually have a knock173。in paragraph 3 probably mean? A.B.C.D.Some wealthy countries tend to reduce meat and dairy though the other areas of policy making isn39。由此