【正文】 s. And because all oxygen enters the surface, less mixing means less of it at depth.可知，當極地海冰融化時，它會在更冷、更咸的海水上形成一層水。故選A。其他地區(qū)的降幅較小，全球平均降幅為2%。根據(jù)第二段中的It is no surprise to scientists that warming oceans are losing oxygen, but the scale of the drop calls for urgent attention. Oxygen levels in some tropical (熱帶的) regions have dropped by an astonishing 40 percent in the last 50 years, some recent studies reveal. Levels have dropped less significantly elsewhere, with an average loss of 2 percent globally.可知，對于科學家來說，變暖的海洋正在失去氧氣并不奇怪，但這種下降的規(guī)模需要緊急關注。同時介紹了海洋氧含量下降的原因以及對海洋生物的影響和對其生存的威脅。D.The Survivability of Ocean AnimalsB.Some animals reduce their movements in order to absorb more oxygen.（4）Which of the following is the best title of the passage? A.Ocean acidification is more serious a problem than deoxygenation.C.Ocean deoxygenation changes some animals39。The surface polar ice water prevents oxygen going down.D.Polar ice melting consumes much oxygen in the ocean.B.The alarmingly changeable oxygen levels in the ocean.D.The worsening deoxygenation in the warming ocean.B. Ocean animals large and small, however, respond to even slight changes in oxygen by seeking refuge in higher oxygen zones or by adjusting behavior, Oschlies and others in his field have found. These adjustments can expose animals to new predators or force them into foodscarce regions. Climate change already poses serious problems for marine life, such as ocean acidification, but deoxygenation is the most pressing issue facing sea animals today, Oschlies says. After all, he says, they all have to breathe. In the past decade ocean oxygen levels have taken a dive—an alarming trend that is linked to climate change, says Andreas Oschlies, an oceanographer at the Helmholtz Center for Ocean Research in Germany, whose team tracks ocean oxygen levels worldwide. We were surprised by the intensity of the changes we saw, how rapidly oxygen is going down in the ocean and how large the effects on marine ecosystems are, he says. It is no surprise to scientists that warming oceans are losing oxygen, but the scale of the drop calls for urgent attention. Oxygen levels in some tropical (熱帶的) regions have dropped by an astonishing 40 percent in the last 50 years, some recent studies reveal. Levels have dropped less significantly elsewhere, with an average loss of 2 percent globally.4．犇犇Choose the one that fits best according to the information given in the passage you have just read. 故選B。所以短文的最佳標題為讓現(xiàn)代科技溫暖你的冬日。人們憑借科學技術(shù)發(fā)明了各式各樣的防寒方法。通讀全文可知，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。故選C。先進的技術(shù)、引擎環(huán)和設計為我們提供了解決老問題的新方法。根據(jù)第二段中的Fortunately, things don39。故選A。根據(jù)第四段中的 At the touch of a button, or through an app on our phones, the clothing generates heat from elements placed inside. 可知，只要按下按鈕，或者通過手機上 應用程序，安裝在衣服內(nèi)部的電子元件就會產(chǎn)生熱量。故選D。所以通過 keep warm可知，外出時要想暖和一些，就要多穿衣服。根據(jù)第一段中的In my memory, winters always used to be really unpleasant. You had to bundle up just to keep warm when you went outside. 可知，在我的記憶中，冬天總是很不令人愉快。比如，用智能電子設備調(diào)節(jié)屋內(nèi)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(chǎn)品的問世，冬天也能變得舒適宜人。D.Ways of keeping warmB.s the best title of this passage? A.technology can do nothing to make winter less roughD.s model can be controlled by saying something to itB.It keeps warm for over 12 hours after being charged fox an hour.（3）From the passage, we can lean the following statements EXCEPT that ________. A.It needs to be warned up before being used.C.Put on more clothes.（2）How does electronic thermal clothing work? A.C.Take a hot bath.t be really, really cool.（1）What do the underlined words bundle up mean in ? A.t freeze up. With the right solutions, there39。 Finally, there is the clothing for the head, beanie s and Earmuff, that feature speakers included in the fabric using Bluetooth technology so we can listen to our favourite music or, in some cases, have a phone callusing the inbuilt microphone. All while keeping the head warm and avoiding a cold. your habits and automatically heats the home for you.s model features voice control, while the Nest 39。t be like skating on thin ice. Fortunately, things don39。s a miracle you didn39。 In my memory, winters always used to be really unpleasant. You had to bundle up just to keep warm when you went outside. You were often cold, wet, slip on the ice, and you39。 【點評】本題考點涉及細節(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，要求考生準確捕捉細節(jié)信息，同時根據(jù)上下文進行邏輯推理，從而選出正確答案。由此可知。free land on Earth is used for agriculture, and according to some estimates, producing food accounts for roughly a fifth of all human173。 （3）考查細節(jié)理解。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。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。根據(jù)第三段中的“A third of the ice173。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Paul Behrens會贊成，故選C。t mention explicitly—or most of them don39。根據(jù)第二段中的 What we found is that impacts vary across nations, but in the high173。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。Some wealthy countries tend to reduce meat and dairy though the other areas of policy making isn39。Paul Behrens39。free land used.B.Food production can lead to about 20 percent of human173。D.C.B.in paragraph 3 probably mean? A.ine nations don39。Not all the countries have remended diets in an explicit manner.D.Following a nationally remended diet can have similar impacts in different countries.B.s going to be based off a lot of detail that I get from the nationally remended guidelines. So while it might not necessarily be the case that people follow directly …they actually are quite influential on the preparation of other advice. for173。m developing a new healthy173。 Of course, people are noto