【正文】 s opinion? has the same effects as laughter. can be used to take the place of medicine. is better than any healthy lifestyle to health. can make our body produce beneficial chemicals.（2）What can we know about the mentioned stress hormones? can lower our blood pressure. will surely lead to heart diseases. can benefit us when we are in danger. will make us live an。Once people smile, they are relaxing. This relaxation directly lowers blood pressure, improves sugar levels in the blood. If we are smiling, we are breaking that link between stress and health. And it just may provide a little extra protection to everyone39。 Researchers say the connection between stress and heart disease is still unclear. However, they claim that when people are stressed for long periods of time, they may have an unhealthy lifestyle, which can lead to health problems. s main stress hormone. It increases sugar in the bloodstream. If you are truly in danger, these hormones can help you. They are part of what we call our fightorflight response. Dr. Chockalingam, a heart disease specialist in Columbia, advises his patients to smile. He says a smile may be one way to help your heart. When we smile, the brain wiring changes. The chemicals that are released are more positive. He says smiling is the first step in fighting physical and emotional stress and its sometimes harmful effects on human health. This is not just New Age advice. Several studies support his opinion. 7．閱讀理解 故選D。所以短文主要是圍繞著海洋氧含量下降而展開的。 （4）考查主旨大意。故判斷出海洋脫氧改變了一些動物的自然領地。這些調整可能使動物暴露在新的掠食者面前，或迫使它們進入食物匱乏的地區(qū)。 （3）考查推理判斷。所以表面的極地冰水阻止氧氣下沉是海洋缺氧的原因之一。這個過程會形成一種冰蓋，它可以防止水流將地表水混合到海洋更深的深度。 （2）考查細節(jié)理解。所以根據(jù)前兩段，科學家最擔心的是變暖的海洋中日益惡化的脫氧現(xiàn)象。一些最近的研究表明，在過去的50年里，一些熱帶地區(qū)的氧氣含量下降了驚人的40%。 （1）考查細節(jié)理解。The Ocean Is Running Out of Breath【答案】 （1）A（2）C（3）A（4）D 【解析】【分析】本文是一篇說明文，介紹了海洋氧含量下降是一個與氣候變化有關的令人擔憂的趨勢。Ocean Warming Affects Food WebC.The Oxygen Levels of Marine LifeNot all ocean animals are bothered by the decreasing oxygen levels.D. natural territories.B.Salty water holds less gas in the increasingly warmer ocean.（3）What can be inferred from the passage? A.Global warming reduces the amount of oxygen in the air.C.The lack of attention to the warming of tropical oceans.（2）Which of the following is a reason for the oxygen loss in the ocean? A.The survival of predators and various marine animals.C. Aside from food web problems, animals face various other physiological challenges as their bodies adjust to lower oxygen levels. Chinese shrimp (蝦) move their tails less vigorously to preserve energy in lower oxygen environments. Some creatures, such as jellyfishes, are more tolerant of low oxygen than others are. But all animals will feel the impact of deoxygenation because they all have evolved their oxygen capacity for a reason, says Oschlies. Any drop in oxygen is going to damage survivability and performance, he says.（1）According to the first two paragraphs, what worries scientists the most? A. A warming ocean loses oxygen for two reasons: First, the warmer a liquid bees, the less gas it can hold. That is why carbonated drinks go flat faster when left in the sun. Second, as polar sea ice melts, it forms a layer of water above colder, more salty sea waters. This process creates a sort of lid that can keep currents from mixing surface water down to deeper depths. And because all oxygen enters the surface, less mixing means less of it at depth. Escaping predators (食肉動物), digestion and other animal activities—including those of humans—require oxygen. But that essential ingredient is no longer so easy for marine life to obtain, several new studies reveal. 【點評】本題考點涉及細節(jié)理解，詞義猜測和主旨大意三個題型的考查，是一篇科普類閱讀，要求考生在捕捉細節(jié)信息的基礎上，進一步根據(jù)上下文的邏輯關系，進行分析，推理，概括和歸納，從而選出正確答案。故B選項讓現(xiàn)代科技溫暖你的冬日符合題意。比如，用智能電子設備調節(jié)屋內和衣物的溫度；使用無線科技制造會自動發(fā)熱的服飾?，F(xiàn)如今，每到嚴冬時節(jié)，雖然溫度驟降、天氣惡劣，但隨著各類智能保暖產品的問世，冬天也能變得舒適宜人。 （4）考查主旨大意。所以C選項科技無法讓冬天變得不那么難熬不符合短文說明的內容。t have to be so challenging any more. Technology, engine ring and design have advanced giving us new solutions to old problems可知，幸運的是，事情不需要再這么有挑戰(zhàn)性了。 （3）考查細節(jié)理解。所以電子保暖服裝工作的原理是安裝在衣服內部的電子元件產生熱量。 （2）考查細節(jié)理解。故判斷出第1段中帶下劃線的單詞bundle up是多穿點衣服。你外出時必須穿得暖和一點。 （1）考查詞義猜測。人們憑借科學技術發(fā)明了各式各樣的防寒方法。An unpleasant winter【答案】 （1）D（2）A（3）C（4）B 【解析】【分析】本文是一篇說明文，在科技并不發(fā)達的過去，人們可能會為如何在嚴寒天氣里更好地保暖而倍感困擾。A Modern winterC.A Smart ThermostatBluetooth technology is used in the clothing for the head（4）What39。with the inbuilt speaker and microphone, Beanies and Earmuffs users can have a phone callC.Tado39。The thermostat heat up automatically when the temperature is low.D.The equipment placed inside the clothing produces heat.B.D.Run a lot.B.Fix an air conditioner.s no reason why winter can39。 For many, the thought of winter used to be enough to make their blood run cold. But using technology, life needn39。 Clothes have been given an upgrade, too. Electronic thermal jackets, sweaters and coats heat up when you turn them on. What better way to keep warm in the dead of winter? At the touch of a button, or through an app on our phones, the clothing generates heat from elements placed inside. Many models offer three levels of heating which stay warm for over 12 hours. .leans39。 With a smart thermostat (溫度自動調節(jié)器), our homes can be warm when we need them to be. Many models feature smartphone apps that allow you to control temperature remotely, so we can warm up the house before we arrive home. According to , Tado39。t have to be so challenging any more. Technology, engine ring and design have advanced giving us new solutions to old problems. It means dealing with winter needn39。t get cold to the bone.d arrive home to an icecold house. And that would mean turning on the heating and waiting. It39。5．犇犇閱讀理解 本文介紹亞歷山大技巧的對于矯正身體的作用以及其發(fā)明者，故可知在介紹亞歷山大技巧的作用，故選C。