【正文】 is being tested by UK researchers. The device could save thousands of lives each year by warning when an area should be evacuated, the scientists say. Such natural disasters arc mon in countries that experience sudden, heavy rainfall, and can also be triggered by earthquakes and even water erosion. 英國研究者們正在測試一種儀器，它可以通過監(jiān)測土壤振動提供早期山崩預(yù)告。接著 這個初始運動， ―山坡在數(shù)分鐘或數(shù)小時內(nèi)變得不穩(wěn)定， ‖英國拉夫堡大學(xué)尼爾 s team has developed a device that listens for the vibrations39。所以任何一種方法都可能導(dǎo)致誤警。振動波順著鋼管上傳，被地表傳感器接收。一旦這種儀器通過了認(rèn)真徹底的檢測，它將成為 —個完善的山崩早期預(yù) 警系統(tǒng)。 ‖但是，保特又說一個早期預(yù)警系統(tǒng)本身并不足以防災(zāi)， ―你需要建立人際交流， ‖他說， ―使系backer bag 60 統(tǒng)發(fā)射的預(yù)警送達(dá)到需要的人群是不容易的事。在就餐時間外飲酒也會使患喉癌的可能性增加至少 20%。 For their new analysis, the European scientists divided people in the study into four groups, based on how many drinks they reported having in an average week. The lowestintake group included people who averaged up to 20 drinks a week. The highest group reported downing at least 56 servings of alcohol weekly for an average of eight or more per day. Cancer risks for the mouth and neck sites rose steadily with consumption even for people who reported drinking only with meals. For instance, pared with people in the lowestconsumption group, participants who drank 21 to 34 alcohol servings a week at least doubled their cancer risk for all sites other than the larynx. If people in these consumption groups took some of those drinks outside meals, those in the higher consumption group at least quadrupled their risk for oral cavity and esophageal cancers. 為了進(jìn)行新的頒，歐洲科學(xué)家根據(jù)每星期平均飲酒量將被研究者分為4 組。如果這幾組中的人在就餐時間以外飲酒，那些屬于高飲酒量組的人會使他們患口腔癌和食道癌的危險至少增加3倍。 ‖Dal Maso 說。s lower exposure to alcohol據(jù)最后一段組織酒精的降低會 D. reduces the risk of laryngeal cancer. 降低喉癌的機率 38Life Form Found on S aturn39。美國國家航空航天局 (NASA)的研究者們對卡西尼號探測器所傳回來的數(shù)據(jù)進(jìn)行了分析，數(shù)據(jù)表明，土星衛(wèi)星中最大的一顆衛(wèi)星有以甲烷為基礎(chǔ)的生命的存在跡象。s plalike surface covered with methane lakes and rivers. This,they say,points to the existence of somebugs5 consuming the hydrogen at the surface of the moon less than half the size of the Earth. 他們認(rèn)為，氫氣在到達(dá)布滿甲烷河流湖泊的土衛(wèi)六類似行星一樣的表層前就已經(jīng)被吸收了。如果這些跡象最終證明是生命的跡象，它會加倍令人興奮，因為它會代表完全不同于地球上水基生命的第二種生命。我們知道，冰塊太冷不能維持生命。但卡西尼號在它的表面沒有探測到乙炔。極為可能的是，一種化學(xué)過程而非生物學(xué)能解釋這些結(jié)果。（第五段） ―這種生命形式 ‖指的是什么？ B Methanebased 命。一旦一個具有所期望特性的小雞被孵化出來或被基因改造，每小時成千上萬的雞蛋會孵出如出一轍的小雞滾下生產(chǎn)線。這個預(yù)想為擔(dān)憂增加雞場小雞痛苦的動物福利組織拉響了警報。t be removed and implanted. Instead, the pany is trying to bulkgrow6, embryonic stem cells7 taken from fertilized eggs as soon as they39。 ‖F(xiàn)itzgerald說 Using a longestablished technique, these donor cells will then be injected into the embryo of a freshly laid, fertilized recipient egg9, forming a chick that is a chimera. Strictly speaking a chimera isn39。s not 100 percent, he says. 運用早已形成的技術(shù)，這些干細(xì)胞會被注入剛孵出的，已受精的，要接受細(xì)backer bag 60 胞植入的雞蛋的胚胎中，形成一個嵌合體的小雞。 ‖ Another challenge for Origen is to scale up10 production. To do this, it has teamed up with11 Embrex, which produces machines that can inject vaccines into up to 50,000 eggs12 an hour. Embrex is now trying to modify the machines to locate the embryo and inject the cells into precisely the right spot without killing it. Origen 面臨的另一個挑戰(zhàn)是提高生產(chǎn)量。 1. Which statement is the best description of the new era of factory farming according to the first paragraph?第一段中工業(yè)化農(nóng)場這個新時代是指 C. Cloned chickens are bulkproduced with the same growth rate, weight and taste. 克隆出來的小雞在成長速度、體重和口味上一樣 2. Which institution has offered $ million to fund the research? 哪個提供了 470萬美元資助克隆研究？ A. The US‘s National Institute of Science and Technology. 美國國家科學(xué)技術(shù)研究院 3. In the third paragraph, by saying ―Producers would like the same meat quantity but to use reduced inputs to get there.‖ Mike Fitzgerald means that he wishes 第三段，養(yǎng)殖者的希望是？ D) chickens could grow to the same weight but with less feed. 投入減少但是產(chǎn)量不變 4. Which of the following statements about Origen and Embrex is correct according to the fifth paragraph?5段中哪個觀點是關(guān)于兩大公司 C) Origen has joined hands with Embrex in producing cellinjecting machines. 聯(lián)手生產(chǎn)細(xì)胞注射機器 5. The technology of freezing stem cells from different strains of chicken can do all the following EXCEPT that 冷凍干細(xì)胞技術(shù)的作用不可能是 A) farmers can order certain strains of chicken only. 農(nóng)民只能訂購某些品種的小雞 40Teaching Math, Teaching Anxiety 教數(shù)學(xué)，教焦慮 In a new study about the way kids learn math in elementary school, the psychologists at the University of Chicagol1 Sian Beilock and Susan Levine found a surprising relationship between what female teachers think and what female students learn:If a female teacher is unfortable with her own math skills, then her female students are more likely to believe that boys are better than girls at math. 在最新一項關(guān)于小學(xué)生學(xué)數(shù)學(xué)的研究中，芝加哥大學(xué)的心理學(xué)家 Sian Beilock 和 Susan Levine 發(fā)現(xiàn)，女教師的想法和女學(xué)生的學(xué)習(xí)之間有著驚人的聯(lián)系：如果女教師對自己的數(shù)學(xué)能力感到焦慮，她的女學(xué)生很可能認(rèn)為男孩子數(shù)學(xué)比女孩學(xué)得更好。 Just as students find certain subjects to be difficult, teachers can find certain subjects to be difficult to learn and teach. The subject of math can be particularly difficult for everyone. Researchers use the word anxiety to describe such feelings: anxiety is uneasiness or worry. 如同學(xué)生，教師也會覺得某些學(xué)科難學(xué)和難教，這就是研究者所言的 焦慮 ：不自在或擔(dān)心。 The researchers also gave the students tests to tell whether the students believed that a math superstar had to be a boy. Then the researchers turned to the teachers:To find out which teachers were anxious about math,the researchers asked the teachers how they felt at times when they came across math