【文章內(nèi)容簡介】 nal research priority(優(yōu)先事項). 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. 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。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.a vaccine for use in the laboratory will be still be years away.B.pregnant women in Africa will be the first to benefit from the vaccine.C.a licensed vaccine will still not be accessible in a short term.D.The Zika virus will cause less serious birth defects during pregnancy in months.（2）Which of the following statements is NOT true? A.many countries are actively involved in the research of the Zika vaccine.B.US scientists have tested more than two types of Zika vaccine in mice.C.None of the mice given the vaccine caught Zika.D.It is still unknown whether the vaccine is safe and effective.（3）Which can be the best title for the passage? A.Zika vaccine 39。works very well39。 in miceB.Zika vaccine still has a long way to goC.International researches into Zika have paid offD.More attention has been paid to Zika vaccine【答案】 （1）C（2）B（3）A 【解析】【分析】本文是一篇說明文，介紹了科學(xué)家發(fā)現(xiàn)一種實驗性疫苗可以保護(hù)小鼠免受寨卡病毒侵襲。 （1）考查細(xì)節(jié)理解。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。 such as pregnant women 173。 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)年時間，也就是說如果人體試驗進(jìn)展順利的話，短期內(nèi)仍無法獲得授權(quán)疫苗，故選C。 （2）考查細(xì)節(jié)理解。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，美國科學(xué)家在白鼠身上只測試了兩種而不是兩種以上的寨卡病毒，故選B。 （3）考查主旨大意。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，一種實驗性疫苗可以保護(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小白鼠非常有效，故選A。 【點評】本題考點涉及細(xì)節(jié)理解和主旨大意兩個題型的考查，是一篇科研類閱讀，考生需要準(zhǔn)確掌握細(xì)節(jié)信息，同時根據(jù)上下文進(jìn)行推理，歸納，從而選出正確答案。5．犇犇閱讀理解 If plastic had been invented when the Pilgrims sailed from Plymouth, England, to North Americaand their Mayflower had been stocked with bottled water and plastic wrapped snacks, their plastic waste would likely still be around four centuries later. Atlantic waves and sunlight would have worn all that plastic into tiny bits. And those bits might still be floating around the world39。s oceans today, waiting to be eaten by some fish or oyster, and finally perhaps by one of us. Because plastic wasn39。t invented until the late 19th century, and its production only really took off around 1950, we have a mere billion tons of the stuff to deal with. Of that, more than billion tons have bee waste. And of that waste, a surprising billion tons never made it to a recycling binthe figure that shocked the scientists who published the numbers in 2017. No one knows how much unrecycled plastic waste ends up in the ocean, the earth39。s last sink. In 2015, Jenna Jam beck a University of Georgia engineering professor, caught everyone39。s attention with a rough estimate between million and 14 million tons of plastic waste each year just e from coastal regions. Meanwhile, ocean plastic is estimated to kill millions of marine(海洋的）animals every year. Nearly 700 species, including endangered ones, are known to have been affected by it. Some are harmed visibly, stuck by abandoned things made of plastic. Many more are probably harmed invisibly. Marine species of all sizes, from zooplankton to whales, now eat microplastics, the bits smaller than onefifth of an inch across. This isn39。t a problem where we don39。t know what the solution is, says Ted Siegler, a Vermont resource economist who has spent more than 25 years working with developing nations on garbage. We know how to pick up garbage. Anyone can do it. We know how to deal with it. We know how to recycle. It39。s a matter of building the necessary institutions and systems, he says, ideally before the ocean turns into a thin soup of plastic. （1）Why does the author mention the Pilgrims in paragraph 1? A.To prove plastic was difficult to invent.B.To introduce what marine animals like eating.C.To tell the Pilgrims contributed a lot to the marine protection.D.To show plastic waste has a lasting effect on the ocean.（2）What39。s the main trouble marine animals face according to the text? A.Lacking protection.B.Being stuck by plastics.C.Being caught by humans.D.Treating plastics as food.（3）What does Ted Siegler want to tell us in the last paragraph? A.Some people don39。t know the solution of plastics waste.B.Plastics will turn the ocean into a soup of plastic.C.It39。s time to take measures to deal with plastic waste.D.People should avoid using plastics to protect the ocean.（4）From which is the text probably taken? A.A biology textbook.B.A travel brochure.C.An environmental report.D.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。 （1）考查推理判斷。根據(jù)第一段中的“their plastic waste would likely still be around