【正文】 could be used as a cover173。根據(jù)第一段中的“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.”可知彩虹色被動物用來通過逃離捕食者而活得更久，排除A；根據(jù)第三段中的“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.”在這里我想指出的是，在某些物種中，尤其是那些表現(xiàn)出強烈兩性差異的物種，比如天堂鳥、孔雀，甚至在某些蝴蝶或魚類中，彩虹色的出現(xiàn)很可能是由性別選擇所驅(qū)動的。Shining colors as a sexual strategy【答案】 （1）D（2）C（3）C（4）B 【解析】【分析】本文是一篇說明文，介紹了彩虹色有助于生物隱藏。Metallic iridescent as the best disguiseC.A famous camouflage strategyWhy birds are not effected by iridescent insects.D.Whether there are any differences between bees and birds.B.If a circle, with a sugar reward, is iridescent, the bees may have difficulty finding itD.Bees can always tell the difference between a circle and an ovalB.D.catch the attention of their matesC.live a little longer by escaping their predator(捕食者)s173。s concealment？ s concealment39。Coloration in the Animal Kingdom, already in 1909, that 39。up isn39。 The idea that eye173。 And in our research group we are of course interested in why this vivid metallic color is so widespread in nature. Karin Kjernsmo of the University 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。4．犇犇閱讀理解 第二段中的“Now, researchers have said actors show different patterns of brain activity depending on whether they are in character or not.”現(xiàn)在，研究人員表示，演員的大腦活動模式不同，取決于他們是否扮演角色，是全文的主題句，結(jié)合全文內(nèi)容，可知這篇文章主要介紹了一項對于演員大腦活動的研究，故選C。由此推斷出Philip Davis對這項研究持懷疑態(tài)度，故選B。 to be someone — it involves embodying (體現(xiàn)) the text and language.”然而，利物浦大學教授Philip Davis對這項研究并不以為然。 （3）考查推理判斷。研究小組發(fā)現(xiàn)，當演員在扮演角色時，他們會使用一些第三人稱知識或?qū)巧耐茢唷?（2）考查細節(jié)理解。 （1）考查推理判斷。A report of the cooperation of scientists and actors.【答案】 （1）A（2）B（3）B（4）C 【解析】【分析】本文是一篇說明文，介紹了一項對于演員大腦活動的研究。A play written by Shakespeare.C.He advocated it.（4）What is the text mainly about? A.He explained it.He doubted it.He supported it.Actors39。 brain activity differs when they are acting.C.Acting is not as mysterious as people think.B.By consulting some experienced researchers.（2）What is the finding of Dr Brown39。By doing a survey with some theatre goers.C.s team conduct their research? A. The team said they also found additional reduction in activity in two regions of the prefrontal cortex (前額皮質(zhì)) linked to the sense of self, pared with when the actors were responding as themselves. Each actor was asked to respond to different questions, based on two different premises (前提). In one, they were asked for their own perspective, while in the other, they were asked to respond as though they were either Romeo or Juliet. Brown and colleagues report how 15 actors, mainly theatre students, were trained to take on a Shakespeare role — either Romeo or Juliet — in a theatre workshop. They were then invited into the laboratory, where their brains were scanned in a series of experiments. Dr Steven Brown, from McMaster University in Canada, said, It looks like when you are acting, you are suppressing (壓制) yourself。s head has always been something of a puzzle.3．犇犇閱讀理解 故選C。 （4）考查主旨大意。根據(jù)第三段中的The new material was lighter and... more likely to survive the Journey.可知A項和B項正確；以及After all, ... made the chalk powder easier to erase.可知C項正確；D項文章未提及。故選B。t draw the maps their teacher wanted on their tiny boards, so Pillans put several slates together to create a large board. ”在1800年，一名英格蘭校長James Pillans想讓他的學生們畫地圖，但是學生們在他們的迷你板上無法畫出地圖，因此校長讓學生把他們的迷你板拼湊在一起來制造一個大的板。根據(jù)第二段中的“故選D。 （1）考查細節(jié)理解。Function of the blackboard.【答案】 （1）D（2）B（3）D（4）C 【解析】【分析】本文是一篇說明文，通過描述黑板發(fā)展歷程向讀者介紹了黑板最早的時候確實是黑色的，隨后慢慢發(fā)展變成了綠色。Origin of the blackboard.C.s the main idea of the text? A.They39。They39。They39。They39。To arouse students39。To draw students39。To make a parison.B.D.C.B.t plaining either. After all, the new greenboards made the chalk powder easier to erase. Plus, the enamel left less of a glare and the color was nicer to look at. At that point, people started using the word chalkboard as a more accurate descriptor, but blackboard still stuck around.（1）What did the late 18thcentury students use in class? A.t draw the maps their teacher wanted on their tiny boards, so Pillans put several slates together to create a large board. Problem solved! From there, the idea spread quickly as teachers could finally show a concept to the whole class at one time. By 1815, the massive writing spaces were mon enough to earn their own name: blackboard.s up with the name? Originally, blackboards were really black. Before wallsized blackboards existed, late 18thcentury students used their own mini boards made of slate (石板) or painted wood, according to Concordia University, Those first boards were, in fact, black, and they paved the way for the larger ones. When you think back to the blackboard from your school days, what color is it? Chances are that it39。2．犇犇閱讀下列短文，從每題所給的A、B、C和D四個選項中，選出最佳選項。根據(jù)全文的描述，可知作者對于東京奧運倡議是持積極的態(tài)度，故選A。故選D。s a good