【正文】 （1）。Why fastergrowing trees absorb more C02.【答案】 （1）D（2）A（3）A（4）B 【解析】【分析】本文是一篇說明文。Why city living makes trees die young.C.How urban trees can live longer.They can enjoy more shade from neighbors.D.They are more likely to access growth promoters.B.D.To check whether they were healthy.B.To know about their growth rates.It results from the widespread burning of fossil fuels.D.It is one of the side effects of greenhouses.B. tracking, the researchers found city trees absorbed four times as much carbon from the air as forest trees. However, they were twice as likely to die. So over the lifetime of each type of tree, forest trees actually absorbed more CO2.s diameter increases as it grows, just as a person39。 t been much data on whether city trees grow, die and absorb CO2 at the same rate as forest trees do. So some researchers decided to find out. As we all know, the earth would be freezing or burning hot without CO2. However, CO2 is a greenhouse gas, meaning it traps energy from the sun as/heat. That makes temperatures near the ground rise. Human activities, especially the widespread burningof fossil(化石)fuels, have been sending extra greenhouse gases into the air. This has led to a rise in average temperatures across the globe. 8．閱讀理解 s（獵物）position”可知，虎甲蟲的移動(dòng)比眼睛快，基本上是盲目的，這就要求它不時(shí)地停下來，重新評(píng)估獵物的位置，由此可知，為了抓住移動(dòng)的獵物，虎甲蟲需要不時(shí)地停下來確定獵物的位置，故選C。 （4）考查細(xì)節(jié)理解。 （3）考查細(xì)節(jié)理解。 （2）考查推理判斷。根據(jù)第一段中的“According to a team of researchers，an animal39。Try to run as fast as it can.【答案】 （1）D（2）A（3）B（4）C 【解析】【分析】本文是一篇說明文，介紹了對(duì)動(dòng)物時(shí)間感知的研究。Stop occasionally to spot the prey again.B.Slow down to gain its time perception.They can fly much faster than their eyes can keep up.D.They can think very deeply before they act.B.The ability of animals to perceive time depends on their high moving speed.D.The survival of fast moving animals relies on their ability to perceive time.B.Time perception of animals.（2）What does Kevin Healy39。Impressive abilities of animals.C.Pace of life of animals. s(獵物)position. Professor Graeme Ruxton of the University of St Andrews in Scotland, who worked jointly on the research project, said in a statement, Having eyes that send updates to the brain at much higher frequencies than our eyes do is of no value if the brain cannot process that information equally quickly. Thus, this work highlights the impressive abilities of even the smallest animal brains. Flies might not be deep thinkers, but they can make good decisions very quickly. The study was done with a variety of animals using phenomenon based on the maximum speed of flashes of light an individual can see before the light source is seen as constant. Dogs, for example, have eyes with a refresh rate higher than humans. s ability to perceive(感知)time is linked to their pace of life. 7．閱讀理解 故選C。 （4）考查推理判斷。根據(jù)第四段中的“ It is an objective marker of the sort of reduced brain function that goes along with expected, glucose uptake was reduced in those with AD. ”這是一個(gè)患有老年癡呆癥降低了腦功能的客觀標(biāo)志。s disease（AD） ”承認(rèn)自己的健忘也許是一個(gè)很好的跡象，至少?gòu)哪慊祭夏臧V呆癥,的可能性來看，可知選C。 （2）考查細(xì)節(jié)理解。在三十多歲的時(shí)候，我們開玩笑地稱它為“大腦凍結(jié)”，在四十多歲的時(shí)候，我們把它當(dāng)作“老年時(shí)期”來嘲笑，然后繼續(xù)講這些老年笑話。s name or a handsome actor who starred in a famous movie. In our thirties, we jokingly call it ‘brain freeze’ In our forties, we laugh it off as a‘senior moment’ and follow up with one of these old age jokes. But the reality is that there es a point when being forgetful stops being funny and starts to seem a bit dreadful.t remember our neighbor39。根據(jù)第一段中的“一項(xiàng)新的研究表明，不是遺忘，而是沒有意識(shí)到我們的健忘讓人們感到害怕。A health brochure.【答案】 （1）A（2）C（3）B（4）C 【解析】【分析】本文是一篇說明文，介紹了如何預(yù)測(cè)你的記憶喪失是否是老年癡呆癥,A science research.A chemistry book.Science fiction.D.Having higher intake of glucose.B.Realizing others39。s disease.（3）What can be a sign of developing Alzheimer39。s disease.D.Recognizing forgetfulness doesn39。Illness awareness has nothing to do with Alzheimer39。s a rare phenomenon when young people forget something.（2）What statement does the researchers in the new study agree with? A.s disease.D.The memory of the young is better than the old.C. The researchers used existing data for 1, 062 people between the ages of 55 and 90 that had been recorded over a 12year period. The data included brain scans, which the researchers used to look for visual signs of reduced glucose uptake（葡萄糖吸收）.It is an objective marker of the sort of reduced brain function that goes along with expected, glucose uptake was reduced in those with AD. What the researchers also discovered was that glucose uptake was reduced in those with mild cognitive damage who also showed evidence of reduced illness awareness. Finally, the researchers found that those who had reduced illness awareness were more likely to develop AD than those without.（1）What can be implied from paragraph 1？ A. The researchers began with the assumption that one mon feature of Alzheimer39。s not forgetfulness but not being aware that we39。t worry. The fact that you recognize your own forgetfulness may be a very good sign, at least in terms of the possibility of your developing Alzheimer39。s disease（老年癡呆癥）？s cat39。 In our twenties, we find it funny when we can39。 【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，是一篇環(huán)保類閱讀，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，從而選出正確答案?？v觀全文可知，本題介紹了塑料垃圾給海洋以及海洋生物帶來的危害。s a matter of building the necessary institutions and systems, he says, ideally before the ocean turns into a thin soup of plastic.”他說最好在海洋變成塑料湯之前建立一個(gè)必要的機(jī)構(gòu)和制度的問題，可推知選C。 （3）考查推理判斷?？赡苡懈嗟娜耸艿綗o形的傷害。 （2）考查細(xì)節(jié)理解。根據(jù)第一段中的“their plastic waste would likely still be around four centuries later.A lifestyle magazine.【答案】 （1）D（2）B（3）C（4）C 【解析】【分析】本文是一篇說明文，介紹了塑料垃圾給海洋以及海洋生物帶來的危害。A travel brochure.C.A biology textbook.s time to take measures to deal with plastic waste.D.Plastics will turn the ocean into a soup of plastic.