【正文】 根據(jù)第三段中。根據(jù)第三段中的Photosynthesis is the word used to describe how plants use sunlight, water and carbon dioxide to make their own food.可知,光合作用這個詞用來描述植物如何利用陽光、水和二氧化碳制造自己的食物,由此可知,光合作用能幫助植物產(chǎn)生能量,故選A。 genes可知,科學家在研究中選擇使用煙草植物是因為它們的基因很容易改變,故選B。 （2）考查細節(jié)理解。根據(jù)第一段中的scientists have found a way to hack a plant39。Critical.【答案】 （1）B（2）B（3）A（4）C（5）C 【解析】【分析】本文是一篇說明文,介紹了科學家通過研究發(fā)現(xiàn)了通過駭入植物基因使其更快地利用陽光的方法,這種方法對提高糧食產(chǎn)量是個重大突破。Objective.Neutral.Doubtful.unrealistic（5）What is Tala Awanda39。C.deadly genes proved _______. A.It can increase leaf growth on plants by 14 percent.D.It helps plants to produce energy.B.D.Because their genes are easy to change.C.Hacking can be used to change whatever you want.（2）Why did scientists choose tobacco plants to study? A.s genes can be changed by hacking.C.We can find hacking only in digital devices.B.s genes, the protective system turned on and off more quickly than normal. As a result, leaf growth on the plants scientists used in the study increased. Leaf growth on two plants increased by 20 percent, while leaf growth on a third plant increased by 14 percent. Scientists conducted the study on tobacco plants. But they think the genetic changes would produce the same results in corn and rice.s protective system. Normally, this system starts when a plant gets too much sunlight. When the plant senses the light, it creates more leaves. When the plant is in shade, the protective system is turned off. But the process is slow. Photosynthesis is the word used to describe how plants use sunlight, water and carbon dioxide to make their own food. Scientists say this is a very slow process. Plants use less than 1 percent of the energy. But by hacking a plant39。 Scientists used tobacco plants in the study because it is easy to change the plants39。t just for puters and smart phones. According to a study, scientists have found a way to hack a plant39。7．閱讀理解 故選A。通讀全文可知，為了減少鹿所造成的交通事故，科學家引進了美洲師動物，有效的重新引入了了大型的食肉動物讓事故減少了許多。故選C。但這將是一個艱難的銷售：媒體將報道美洲獅的襲擊，但從統(tǒng)計上防止死亡并不能成為新聞。根據(jù)最后一段中的Indeed, the statistics show that cougars would prevent five times as many human deaths from deerrelated accidents as they would cause by attacks. But it39。故選A。每年將減少5人死亡，680人受傷。 （2）考查細節(jié)理解。由此可推斷出carnivore指的是“食肉動物”。ve been driven out.”她認為這將有助于將美洲獅等食肉動物重新引入它們被驅(qū)逐出的歷史區(qū)域會有所幫助。 That39。 （1）考查詞義猜測。Deer Cause Huge Life LossesD.Puma: a Tough SellB.Because the benefits are not as eyecatching as its risks.D.Because the risks outweigh the benefits.B.To reduce people39。To maintain biodiversity and ecological balance.C.A grasseating animal.（2）Why do people want to bring back mountain lions? A.A dangerous animal.C.ll be a tough sell: the press will cover cougar attacks, but a statistically prevented death does not make the news. Nevertheless, If people in the west can put up with having mountain lions around, I would hope that New Yorkers would be up for the challenge as well.（1）What is closest in meaning to the underlined word carnivore in Paragraph 3? A.s possible to just pletely clear it with statistics… What I hope is that knowing that there actually can be some measurable benefits might make people a little more supportive and maybe balance that fear a little bit. says Laura. Our fear of large predators is so natural and intense that I don39。 Still, some folks might be understandably nervous about this kind of plan. After all, reintroducing predators doesn39。ve been driven out. That39。re far more likely to be killed or injured by a deer skipping across the road. 【點評】本題考點涉及細節(jié)理解和推理判斷兩個題型的考查，是一篇科研類閱讀，考生需要準確捕捉細節(jié)信息，并根據(jù)上下文進行邏輯推理，從而選出正確答案。根據(jù)倒數(shù)第二段中的“the tiger beetle（虎甲蟲）runs faster than its eyes can keep up，basically being blind，which requires it to stop periodically to reevaluate its prey39。根據(jù)第四段中的“The research showed flies ‘observe motion in a shorter time than our own eyes can achieve，’which allows them to avoid being hit.”可知，家蠅觀察物體運動的時間比我們?nèi)搜鬯苓_到的時間要短，這使得它們能夠避免被擊中；再結(jié)合第五段中的“but they can make good decisions very quickly.”可知，它們可以很快做出好的決定，也就是說它們可以盡快處理收到的信息，故選B。根據(jù)第二段中的“the importance of time perception in animals where the ability to perceive time in a very short time may be the difference between life and death for fast moving creatures.”可知，對于能快速移動的動物而言，在極短的時間內(nèi)感知時間的能力可能是生與死的區(qū)別，由此可知，Kevin Healy說的意思是快速移動的動物的生存依賴于它們對時間的感知能力，故選A。s ability to perceive（感知）time is linked to their pace of life.”可知，據(jù)一組研究人員稱，動物感知時間的能力與它們的生活節(jié)奏有關，由此可知，文中提到的這個研究是關于動物的時間感知的，故選D。 （1）考查細節(jié)理解。D.Prevent itself from being blind.C.They can send information to brain more quickly than to their eyes.（4）What will a tiger beetle have to do to catch a moving prey? A.They can process the information as quickly as they receive it.C.Animals with poor ability of time perception have a shorter life.（3）Why can houseflies avoid being hit? A.Animals with quicker pace of life have better perception of time.C.s ment mean in ？ A.D.Lifetime of small animals.B.Our results suggest that time perception offers an as yet unstudied dimension along which animals can specialize and there is considerable range to study this system in more detail.（1）What is the research mentioned in the passage mainly about？ A.In parison, the tiger beetle(虎甲蟲)runs faster than its eyes can keep up, basically being blind, which requires it to stop periodically to reevaluate its prey39。One example of this phenomenon at work, the authors say, is the housefly and its ability to avoid being hit. The research showed flies observe motion in a shorter time than our own eyes can achieve, which allows them to avoid being hit. Our results lend support to the importance of time perception in animals where the ability to perceive time in a very short time may be the difference between life and death for fast moving creatu