【正文】 ity of Bristol adds that in some cases the showy splashes of light are a sexual strategy. Here I would like to point out that in some species, particularly those that display strong sexual dimorphism(雌雄兩性), such as birds of paradise or some butterflies or fishes, the occurrence of iridescence is most likely driven by sexual selection. For example, in many of these cases it is the males that have these vivid iridescent colors and they use them in mate choice or they use them as a signal to attract mates. Shining iridescent color, which changes depending on the angle from which it39。2．犇犇閱讀理解 根據(jù)第一段中的A single dose(劑量) of an experimental vaccine(疫苗) can protect mice against the Zika(寨卡) virus,可知，一種實(shí)驗(yàn)性疫苗可以保護(hù)小鼠免受寨卡病毒侵襲，由此可知，本文主要介紹的是寨卡病毒疫苗對(duì)小白鼠非常有效，故選A。根據(jù)第三段中的US scientists from the Walter Reed Army Institute of Research, the Beth Israel Deaconess Medical Center and Harvard Medical School tested two types of Zika vaccine in mice可知，美國(guó)科學(xué)家在白鼠身上只測(cè)試了兩種而不是兩種以上的寨卡病毒，故選B。 would still be years away可知，但是，即使這些進(jìn)展順利，一種廣泛用于保護(hù)高危人群的授權(quán)疫苗仍需數(shù)年時(shí)間，也就是說(shuō)如果人體試驗(yàn)進(jìn)展順利的話，短期內(nèi)仍無(wú)法獲得授權(quán)疫苗，故選C。根據(jù)第二段中的But even if these go well, a licensed vaccine for widespread use to protect those at most risk 173。More attention has been paid to Zika vaccine【答案】 （1）C（2）B（3）A 【解析】【分析】本文是一篇說(shuō)明文，介紹了科學(xué)家發(fā)現(xiàn)一種實(shí)驗(yàn)性疫苗可以保護(hù)小鼠免受寨卡病毒侵襲。Zika vaccine still has a long way to goC.works very well39。It is still unknown whether the vaccine is safe and effective.（3）Which can be the best title for the passage? A.US scientists have tested more than two types of Zika vaccine in mice.C.The Zika virus will cause less serious birth defects during pregnancy in months.（2）Which of the following statements is NOT true? A.pregnant women in Africa will be the first to benefit from the vaccine.C.. A. Researchers say they will push ahead with developing the needed virus vaccine. There are many existing vaccines for other disease that use this type of technology, while there are relatively few DNA173。 would still be years away, experts advise. Zika has been spreading across Central and South America and, most recently, Africa. More than 60 countries and territories now have continuing transmission(傳播) of the disease, which is carried by mosquitoes. The virus causes serious birth damages during pregnancy and has been declared a global public health emergency. Tests in humans could begin in months. But even if these go well, a licensed vaccine for widespread use to protect those at most risk 173。最新高考英語(yǔ)高中英語(yǔ)閱讀理解(科普環(huán)保)技巧(很有用)及練習(xí)題一、高中英語(yǔ)閱讀理解科普環(huán)保類1．犇犇閱讀理解 A single dose(劑量) of an experimental vaccine(疫苗) can protect mice against the Zika(寨卡) virus, raising renewed hope of a vaccine for humans, say scientists. The US team say the results, published in Nature, are striking and should encourage research efforts. such as pregnant women 173。 Now, developing a vaccine for pregnant women to protect their unborn babies is an international research priority(優(yōu)先事項(xiàng)). US scientists from the Walter Reed Army Institute of Research, the Beth Israel Deaconess Medical Center and Harvard Medical School tested two types of Zika vaccine in mice – one based on bits of genetic(基因的) code from the virus and another that is an inactive (and therefore harmless) copy of Zika. Both worked well, protecting every mouse that was immunised against the virus. In parison, all of the mice not given the vaccine caught Zika after they were exposed to it.based vaccines. Of course, future tests will need to check the vaccine is safe and effective in humans, as well as how long the immunity might last.（1）If the tests in humans go smoothly, a vaccine for use in the laboratory will be still be years away.B.a licensed vaccine will still not be accessible in a short term.D.many countries are actively involved in the research of the Zika vaccine.B.None of the mice given the vaccine caught Zika.D.Zika vaccine 39。 in miceB.International researches into Zika have paid offD. （1）考查細(xì)節(jié)理解。 such as pregnant women 173。 （2）考查細(xì)節(jié)理解。 （3）考查主旨大意。 【點(diǎn)評(píng)】本題考點(diǎn)涉及細(xì)節(jié)理解和主旨大意兩個(gè)題型的考查，是一篇科研類閱讀，考生需要準(zhǔn)確掌握細(xì)節(jié)信息，同時(shí)根據(jù)上下文進(jìn)行推理，歸納，從而選出正確答案。 A good disguise keeps you hidden, right? Well, sometimes the best disguise is actually the most dazzling because research reveals that flashy metallic iridescence(金屬彩虹色) can visually puzzle predators, which allows colorful prey to survive another day. Those surprising results appear in the journal Scientific Reports.s viewed, is favored by everything from birds to beetles and blossoms to butterflies.But iridescence also shows up in situations where reproduction is not an issue. So what we are studying now is whether natural selection imposed by predation(捕食行為) could explain the occurrence of iridescence in prey animals. catching colors could be used as a cover173。t a new one. The father of camouflage theory, Abbott Thayer, really believed that iridescence should be categorized as a camouflage strategy. And he wrote in his famous lifework Concealing173。brilliantly changeable or metallic colors are among the strongest factors in an animal39。. And this sounds like a pletely unreasonable thing to say, because how can colors that are both brilliant and changeable contribute to animal39。 In a similar way, we were asking whether iridescence, due to its changeability, could work as a form of camouflage by preventing shape recognition. Kjernsmo and her colleagues trained bumblebees to associate a particular shape—a circle or an oval—with a sugar reward. And they found that the bees, when given a choice, would preferentially visit the shape they knew to be sweet. But when the shapes were iridescent, the bees had trouble telling them apart. It seemed that the strikingly iridescent surfaces on our targets visually broke up the otherwise recognizable shape of the targets, which made them hard t