【文章內(nèi)容簡(jiǎn)介】 了一些野生動(dòng)物是如何進(jìn)行自身防御的。 （1）考查細(xì)節(jié)理解。根據(jù)Sea Hare (海兔)部分中的“The sea hare gives out a slimy, purple ink, the substance which makes food less palatable to predators.”可知，海兔身上散發(fā)出黏糊糊的紫色墨水，這種物質(zhì)使得捕食者對(duì)食物不那么感興趣，從而保護(hù)自己免受捕食者的傷害。故選C。 （2）考查細(xì)節(jié)理解。根據(jù)Opossum (負(fù)鼠)部分中的“In order to bee ‘dead’, they don39。t have to fax anyone a death certificate. They just lie there with their tongues hanging out with the smell of dead flesh, sometimes for hours, effectively convincing potential predators they can find a much fresher meal elsewhere.”可知，負(fù)鼠假裝死亡，讓捕食者在其他地方找到更新鮮的食物，以避免成為捕食者的目標(biāo)。故選B。 （3）考查推理判斷。根據(jù)Millipedes (千足蟲)部分中的“Their major defense is to curl up into a ball. They, though, also release a harm eyes, and leave a horrible smell on their attackers.”可知，千足蟲主要防守是蜷成一團(tuán)。然而，它們也會(huì)釋放出有害 的眼睛，并在攻擊者身上留下可怕的氣味。從而可以推斷出，千足蟲是擁有多種防御機(jī)制的物種。故選C。 【點(diǎn)評(píng)】本題考點(diǎn)涉及細(xì)節(jié)理解和推理判斷兩個(gè)題型的考查，是一篇科普類閱讀，考生需要準(zhǔn)確捕捉細(xì)節(jié)信息，并根據(jù)上下文進(jìn)行邏輯推理，從而選出正確答案。4．犇犇閱讀下列短文，從每題所給的A、B、C和D四個(gè)選項(xiàng)中，選出最佳選項(xiàng)。 Why does time seem to fly by faster as we get old? You39。ve got your aging brain to blame. This is likely due largely to the physical changes of our nerves and neurons (神經(jīng)元). New research suggests 39。rapid fire39。 abilities of the young brain allow us to process more information during youth, causing the days to seem longer earlier in life. However, as we get old, researchers say the older brain takes more time to process information. The new finding put forward by a Duke University researcher was published in a paper in the journal European Review this week According to Adrian Bejan, the J. A Jones Professor of Mechanical Engineering at Duke, the physical changes of our nerves and neurons play, a major role in our perception (知覺) of time as we get old. Over the years these structures bee more plex and eventually begin to degrade. Little babies, for example, move their eyes much more often than adults because they39。re processing images at a faster rate, Beian says, For older people, this means fewer images are being processed in the same amount of time, causing experiences to seem as though they39。re happening more quickly.（1）What causes time to fly faster as we get old? A.Changes of our nerves and neurons.B.Information in our brain.C.The electrical signals.D.Rapid fire abilities.（2）What is unavoidable in the process of getting old? A.Longer days.B.Aging brains.C.More images.D.Less experience.（3）Why do the days seem longer earlier in life? A.Young people are more energetic in their life.B.The younger brain takes less time to process information.C.Old people have fewer things to do than young people.D.Little babies move their eyes much more often.（4）What is the best title of the text? A.Nerves and NeuronsB.Time Flies FastC.The Older, the FasterD.The Function of the Brain【答案】 （1）A（2）B（3）B（4）C 【解析】【分析】本文是一篇說明文，介紹了為什么老年人會(huì)覺得時(shí)間過得較快，主要原因是隨著年齡的增長(zhǎng)，大腦中神經(jīng)元的變化讓老年人的大腦需要更多的時(shí)間來處理接收到的信息，這樣就會(huì)讓他們覺得時(shí)間過得較快。 （1）考查細(xì)節(jié)理解。根據(jù)第一段中的 This is likely due largely to the physical changes of our nerves and neurons (神經(jīng)元).可知，老年人覺得時(shí)間過得過快的原因是神經(jīng)和神經(jīng)元的變化。故選A。 （2）考查推理判斷。根據(jù)第一段中的You39。ve got your aging brain to blame.和第二段中的Over the years, these structures bee more plex and eventually begin to degrade.可知，隨著年齡的增長(zhǎng)，不可避免的就是大腦結(jié)構(gòu)的老化。故選B。 （3）考查推理判斷。根據(jù)第一段中的最后兩句可知，年輕時(shí)之所以覺得日子似乎更長(zhǎng)是因?yàn)榇竽X能夠以“快速射擊”的方式處理更多信息。當(dāng)我們變老的時(shí)候，大腦需要更多的時(shí)間來處理信息。所以說，相較于老年人，年輕人的大腦花費(fèi)更少的時(shí)間來處理信息。故選B。 （4）考查主旨大意。文章首句點(diǎn)明了文章談?wù)撝行模簽槭裁措S著我們變老，我們會(huì)覺得時(shí)間過得更快？后面文章主要解釋了原因：老年人因?yàn)榇竽X退化，神經(jīng)元的變化導(dǎo)致他們覺得時(shí)間過得較快。C項(xiàng)正好與主旨句呼應(yīng)，故選C。 【點(diǎn)評(píng)】本題考點(diǎn)涉及細(xì)節(jié)理解，推理判斷和主旨大意三個(gè)題型的考查，是一篇科研類閱讀，考生需要準(zhǔn)確捕捉細(xì)節(jié)信息，同時(shí)根據(jù)上下文進(jìn)行邏輯推理，概括歸納，從而選出正確答案。5．閱讀理解 Experts note that an unhealthy lifestyle can put you at great risk of heart disease and stroke. So doctors urge us to eat healthy foods, get exercise, stop smoking and limit our alcohol intake. But there is something else you can do. And it is free and easy. Smile! 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. When you feel stressed or under pressure, your body releases many natural hormones (荷爾蒙) including adrenaline and cortisol. Adrenaline increases your heart rate and blood pressure. Cortisol is the body39。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. However, when we are stressed for a long period, these stress hormones are everpresent in our bodies. And that, medical researchers warn, may lead to health problems. 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. Dr. Chockalingam says a smile may be one way to help. He tells his patients to smile 20 times an hour. To some, that might seem like a lot of smiling. Or some might even feel foolish ... smiling for seemingly no reason. But a smile does not involve drugs. It is not invasive like a surgical operation. It is free and it has no bad side effects. 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。s heart health.（1）Which of the following agrees with Dr. Chockalingam39。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 unhealthy lifestyle.（3）Why does Dr. Chockalingam think smiling is helpful to our health?