【正文】 s genes, the protective system turned on and off more quickly than normal. As a result, leaf growth on the plants scientists used in the study increased. Leaf growth on two plants increased by 20 percent, while leaf growth on a third plant increased by 14 percent. Scientists conducted the study on tobacco plants. But they think the genetic changes would produce the same results in corn and rice.s protective system. Normally, this system starts when a plant gets too much sunlight. When the plant senses the light, it creates more leaves. When the plant is in shade, the protective system is turned off. But the process is slow. Photosynthesis is the word used to describe how plants use sunlight, water and carbon dioxide to make their own food. Scientists say this is a very slow process. Plants use less than 1 percent of the energy. But by hacking a plant39。 Scientists used tobacco plants in the study because it is easy to change the plants39。t just for puters and smart phones. According to a study, scientists have found a way to hack a plant39。8．閱讀理解 根據(jù)最后一段中的To understand how much impact Twitch has made, data from gaming analyst group Newzoo show that eSports global audience increased 43 percent from 204 million to 292 million between 2014 and 2016.可知,為了了解Twitch產(chǎn)生了多大的影響,游戲分析機(jī)構(gòu)Newzoo的數(shù)據(jù)顯示,從2014年到2016年,全球電子競(jìng)技的觀眾數(shù)量增長(zhǎng)了43%,由此可知最后一段引用的數(shù)據(jù)就是為了表明Twitch產(chǎn)生的影響,故選C。根據(jù)倒數(shù)第二段可知，如今,由于技術(shù)的進(jìn)步和像Twitch這樣的流媒體服務(wù)的到來(lái),電子競(jìng)技正在快速發(fā)展,由于Twitch的覆蓋面廣,它已經(jīng)將電子游戲競(jìng)賽展示給了新的觀眾,特別是growing at a rapid pace表明了作者對(duì)電子競(jìng)技的未來(lái)充滿希望,故選C。根據(jù)第二段中的The history of eSports dates back to 1972,ESports pretty much continued on the rather quiet path until the 80s,2002 marked the beginning of a new era for the sport及Halo Ⅱ became the first game to be shown on national television for Major League Gaming in 2004, paving the way for eSports to bee a global phenomenon.等細(xì)節(jié)可知,本段以時(shí)間為順序介紹了電子競(jìng)技的發(fā)展,故選D。根據(jù)第一段中的ESports are professional multiplayer video game petitions. Any video game with a strong petitive element is considered eSports.可知,電子競(jìng)技是一種專業(yè)的多人視頻游戲競(jìng)賽,任何具有強(qiáng)烈競(jìng)爭(zhēng)元素的電子游戲都被認(rèn)為是電子競(jìng)技,也就是說(shuō)電子競(jìng)技具有很強(qiáng)的競(jìng)爭(zhēng)性,故選A。s interest.【答案】 （1）A（2）D（3）C（4）C 【解析】【分析】本文是一篇說(shuō)明文,介紹了什么是電子競(jìng)技以及它的發(fā)展。D.To conduct a research.C.Worried.（4）What is the purpose of quoting data in the last paragraph? A.Hopeful.Uncertain.Doubtful.The development of eSports.（3）How does the author feel about eSport39。The advantages of eSports.B.The athletes in the sports are programmers.（2）What is the main idea of Paragraph 2? A.They totally differ from traditional ones.B.They are strongly petitive. To understand how much impact Twitch has made, data from gaming analyst group Newzoo show that eSports global audience increased 43 percent from 204 million to 292 million between 2014 and 2016. Interestingly, this coincides (一致) with Amazon39。 The history of eSports dates back to 1972 when some Stanford University students peted in the Intergalactic Space War Olympics for the opportunity to win a oneyear subscription to the Rolling Stone Magazine. ESports pretty much continued on the rather quiet path until the 80s when petitions like the Space Invaders Championship shot them to the spotlight. 2002 marked the beginning of a new era for the sport and laid the foundation for what eSports would bee thanks to the release of the Xbox live, which brought online play to consoles. Halo Ⅱ became the first game to be shown on national television for Major League Gaming in 2004, paving the way for eSports to bee a global phenomenon.7．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(lái)，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(lái)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(shuō)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. 6．閱讀理解 以及結(jié)合文章內(nèi)容主要介紹了微笑能夠讓我們放松進(jìn)而有利于我們的健康，所以要健康那就要多微笑，所以選B。根據(jù)第二段中的“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.”哥倫比亞的心臟病專家Chockalingam博士建議他的病人保持微笑。故選A。而且它可能會(huì)為每個(gè)人的心臟健康提供一點(diǎn)額外的保護(hù)。根據(jù)最后一段中的“If we are smiling, we are breaking that link between stress and health. And it just may provide a little extra protection to everyone39。故選C。根據(jù)第三段中的“If you are truly in danger, these hormones can help you.”如果你真的有危險(xiǎn)，這些荷爾蒙會(huì)幫助你。故選D。釋放出的化學(xué)物質(zhì)更積極。 （1）考查細(xì)節(jié)理解。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 men