【正文】 Being bitten by mosquitoes is annoying, but don39。 In addition to carbon dioxide, the color of the clothes you wear also plays a role in attracting mosquitoes.This love for CO2 can also put pregnant women at increased risk for mosquito bites, as they tend to exhale 21 percent more CO2 than people of the same age and size who aren39。As a result, people who simply exhale (呼出) more of the gas over time – generally, larger people – have been shown to attract more mosquitoes than others. This is why kids don39。 s why you monly find them in crowded streets and parks. s not plicated. The two most important reasons a mosquito is attracted to you have to do with sight and smell.A popular myth claims that mosquitoes prefer certain blood types, but the fact is that they simply can39。re not alone. According to Smithsonian Magazine, around 20 percent of people in the world are especially tasty to mosquitoes. What about these people makes mosquitoes39。 re being eaten alive within minutes of stepping outdoors. 7．閱讀理解 縱觀全文可知，,作者提到無(wú)現(xiàn)金支付即電子支付的好處,也提到電子支付引起的擔(dān)憂,對(duì)待電子支付是客觀的,故選C。故選B。大多數(shù)金融公司都渴望放棄它,或者以高昂的費(fèi)用勸阻老式客戶。根據(jù)第四段中的 “But equally important is that suppliers such as banks and tech firms (in developed markets)... Most financial firms are keen to abandon it, or discourage oldfashioned customers with heavy fees.”可知現(xiàn)金消失的一個(gè)重要原因就是諸如銀行和科技公司（在發(fā)達(dá)市場(chǎng)）和電信公司（在新興市場(chǎng)）之類的供應(yīng)商正在開(kāi)發(fā)快速,易于使用的支付技術(shù),他們可以從中提取數(shù)據(jù)和小費(fèi)。故選C。根據(jù)第三段中的“In Sweden the number of retail cash transaction per person has fallen by 80% in the past ten years.”可知在過(guò)去的十年中,瑞典的人均零售現(xiàn)金交易數(shù)量下降了80％；再根據(jù)“In China digital payments rose from 4% of all payments in 2012 to 34% in 2017.”可知在中國(guó),數(shù)字支付從2012年占所有支付的4％上升到2017年的34％。故選D。根據(jù)第一段中的“Rich countries are racing to dematerialise payments.”可知, 富裕國(guó)家正競(jìng)相將支付非物質(zhì)化；再根據(jù)第三段中的“In Sweden the number of retail cash transaction per person has fallen by 80% in the past ten years.”在過(guò)去的十年中,瑞典的人均零售現(xiàn)金交易數(shù)量下降了80％?？偟膩?lái)說(shuō),無(wú)現(xiàn)金經(jīng)濟(jì)的未來(lái)是個(gè)好消息,但是對(duì)于電子支付人們也有一些擔(dān)憂。D.C.B.. A.s attitude towards digitalized payment is the infrastructure is developing at a high speed in developed marketsD.younger consumers are short of money to live their digital livesB.China is developing faster that those developed countries in digital payment（3）Cash is disappearing largely because that cash is still king across the worldC.. A.promote payment without paper money or coins（2）In paragraph 3, several countries are mentioned to show get rid of the sideeffects of cashC.. A. Yet set against these benefits are a couple of worries. Electronic payment systems may risk technical failures, power failure and cyberattacks. In a cashless economy the poor, the elderly and country folk may be left behind. And a digital system could let governments watch over people39。 Cash is dying out because of two forces. One is demand— younger consumers want payment systems that plug easily into their digital lives. But equally important is that suppliers such as banks and tech firms (in developed markets) and teles panies (in emerging ones) are developing fast, easytouse payment technologies from which they can pull data and pocket fees. There is a high cost to running the infrastructure behind the cash economy—ATMs, vans carrying notes, tellers who accept coins. Most financial firms are keen to abandon it, or discourage oldfashioned customers with heavy fees. For the past 3,000 years, when people thought of money they thought of cash. Over the past decade, however, digital payments have taken off— tapping your plastic on a terminal or swiping a smartphone has bee normal. Now this revolution is about to turn cash into an endangered species in some rich economies. That will make the economy more efficient—but it also causes new problems that could hold back the transition(轉(zhuǎn)型).6．閱讀理解 第一段中的“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.”有時(shí)，最好的偽裝其實(shí)是最耀眼的偽裝，因?yàn)檠芯勘砻?，閃光的金屬彩虹色能在視覺(jué)上迷惑捕食者，這讓五顏六色的獵物能夠再存活一天，是全文的主題句，結(jié)合全文內(nèi)容，可知這篇文章主要講了彩虹色有助于生物隱藏，故選B。由此推斷接下來(lái)一段會(huì)談?wù)?為什么鳥類不受彩虹色昆蟲的影響，故選C。根據(jù)最后一段說(shuō)研究人員目前正在對(duì)鳥類進(jìn)行實(shí)驗(yàn)，這些鳥類的飲食中經(jīng)常含有彩虹色的昆蟲。故選C。 （2）考查細(xì)節(jié)理解。up isn39?？芍?jiǎng)游镉貌屎缟鹜榈淖⒁?，排除B；根據(jù)倒數(shù)第二段中的“The idea that eye173。 （1）考查細(xì)節(jié)理解。D.Colors unique to animalsB.Which camouflage theory applies more to birds.（4）Which of the following might serve as the best title of the passage? A.Some industries that have great interest in camouflage.C.Bees are likely to prefer circles to ovals, whether they are iridescent or not（3）What will be talked about in the following paragraph? A.Bees are creatures that are fascinated by sweet things that are iridescentC.catch sight of more colorful preys（2）From the study in the last paragraph, we can learn that ________. A.conceal themselves when in dangerB.eye view.（1）According to the passage, iridescence is not made use of by animals to ________. A. 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 to distinguish. As for making use of this method for hiding in plain sight, Any practical applications is of course directly linked to any industry that has an interest in camouflage, that is how to conceal objects or make them more difficult to recognize. The researchers are currently conducting experiments with