【文章內(nèi)容簡(jiǎn)介】 60。. is impossible for life to exist on planets life could only exist on a few planets could exist on only one planet in a million could exist on a great number of planets【答案】 （1）B（2）C（3）A（4）D 【解析】【分析】本文是一篇說(shuō)明文，整個(gè)宇宙都是由同一種物質(zhì)構(gòu)成的，物質(zhì)在宇宙的每一部分都遵循同樣的規(guī)律。因此，我們有理由猜測(cè)，其他恒星，以及它們自己的行星，都是以與我們太陽(yáng)系相同的方式誕生的。我們對(duì)地球上生命的了解表明，只要存在適當(dāng)?shù)臈l件，生命就會(huì)出現(xiàn)。 （1）考查細(xì)節(jié)理解。根據(jù)第三段中的“Life requires the right amount and kind of atmosphere”；第四段中“Life also requires a steady supply of heat and light.”以及第五段中“Finally, life could evolve(進(jìn)化) only if the planet is just the right distance from its sun”可知，生命的進(jìn)化需要適當(dāng)數(shù)量和種類(lèi)的大氣、穩(wěn)定的光和熱供應(yīng)以及行星與太陽(yáng)的距離恰到好處。文章中沒(méi)有提到生命的進(jìn)化需要太陽(yáng)系。故選B。 （2）考查細(xì)節(jié)理解。根據(jù)第四段中的“Life also requires a steady supply of heat and light. This eliminates double stars, or stars that flare up suddenly. ” 可知，生命也需要穩(wěn)定的光和熱供應(yīng)。這就排除了雙星，或突然爆發(fā)的恒星。故選C。 （3）考查推理判斷。根據(jù)倒數(shù)第二段中的“First, eliminate those stars that are not like our sun. Next eliminate most of their planets。 they are either too far from or too close to their suns. Then eliminate all those planets which are not the same size and weight as the earth. Finally, remember that the proper conditions do not necessarily mean that life actually does exist on a planet.”可知，大部分行星都不能維持生命，因?yàn)樗麄円措x太陽(yáng)太近，要么離太陽(yáng)太遠(yuǎn)，要么與地球大小和重量不一樣，而且適當(dāng)?shù)臈l件也并不一定意味著生命確實(shí)。故選A。 （4）考查推理判斷。根據(jù)最后一段中的“However, even if life could exist on only one planet in a million, there are so many billions of planets that this would still leave a vast number on which life could exist.”可知， 然而，即使生命可能只存在于百萬(wàn)分之一的行星上，但仍有數(shù)十億的行星可能存在生命?？芍?，生命可能在許多星球存在。故選D。 【點(diǎn)評(píng)】本題考點(diǎn)涉及細(xì)節(jié)理解和推理判斷兩個(gè)題型的考查，是一篇科普類(lèi)閱讀，考生需要準(zhǔn)確掌握細(xì)節(jié)信息，并根據(jù)上下文進(jìn)行邏輯推理，從而選出正確答案。5．閱讀理解 Chinese scientists recently have produced two monkeys with the same gene, Zhong Zhong and Hua Hua, using the same technique that gave us Dolly the sheep. These monkeys are not actually the first primates（靈長(zhǎng)類(lèi)）to be cloned. Another one named Tetra was produced in the late 1990s by embryo（胚胎）splitting, the division of an earlystage embryo into two or four separate cells to make clones. By contrast, they were each made by replacing an egg cell nucleus（原子核）with DNA from a differentiated body cell. This Dolly method, known as somatic cell nuclear transfer（SCNT）, can create more clones and allows researchers greater control over the edits they make to the DNA. Success came from adopting several new techniques. These included a new type of microscopy to better view the cells during handling or using several materials that encourage cell reprogramming, which hadn39。t been tried before on primates. Still, the research process proved difficult, and many attempts by the team failed. Just two healthy baby monkeys born from more than 60 tested mothers. This leads to many researchers39。 pouring water on the idea that the team39。s results bring scientists closer to cloning humans. They thought this work is not a stepping stone to establishing methods for obtaining live born human clones. Instead, this clearly remains a very foolish thing to attempt, it would be far too inefficient, far too unsafe, and it is also pointless. But the scientists involved emphasize that this is not their goal. There is now no barrier for cloning primate species, thus cloning humans is closer to reality. However, their research purpose is entirely for producing nonhuman primate models for human diseases。 they absolutely have no intention, and society will not permit this work to be extended to humans. Despite limitations, they treat this breakthrough a novel model system for scientists studying human biology and disease.（1）What do we know about the technology called SCNT? A.It created the first two primates.B.It may contribute to editing the DNAC.It can divide an earlystage embryo into several cells.D.It produced two cloned monkeys with different genes.（2）What does the author mean by “pouring water on the idea” in paragraph 2? A.Keeping a hot topic of it.B.Having a low opinion of it.C.Attaching no importance to it.D.Adding supportive evidence to it.（3）What is the scientists39。 purpose to clone these monkeys? A.To help with the study of human diseases.B.To serve as a stepping stone to their reputation.C.To prepare for their research on human cloning.D.To raise money for holding an exhibition of novels.（4）What can we infer from the passage? A.New techniques seem to be pointless.B.Cloning humans is already on its way.C.Society won39。t agree to clone another monkey.D.The success rate of cloning a monkey was not high.【答案】（1）B（2）B（3）A（4）D 【解析】【分析】本文是一篇說(shuō)明文，科學(xué)家們利用高科技克隆猴子幫助研究人類(lèi)疾病。(1)考查細(xì)節(jié)理解。根據(jù)第一段中的“This Dolly method, known as somatic cell nuclear transfer（SCNT）, can create more clones and allows researchers greater control over the edits they make to the DNA.”可知，SCNT可能有助于編輯DNA。故選B。(2)考查詞義猜測(cè)。根據(jù)第二段中的“Still, the research process proved difficult, and many attempts by the team failed. Just two healthy baby monkeys born from more than 60 tested mothers. This leads to many researchers39。 pouring water on the idea that the team39。s results bring scientists closer to cloning humans.”可知在第二段中“pouring water on the idea”的意思是“對(duì)它的評(píng)價(jià)很低?！惫蔬xB。(3)考查推理判斷。根據(jù)最后一段中的“However, their research purpose is entirely for producing nonhuman primate models for human diseases。 they absolutely have no intention, and society will not permit this work to be extended to humans.”可知，科學(xué)家們克隆這些猴子的目的是幫助研究人類(lèi)疾病。故選A。(4)考查推理判斷。根據(jù)倒數(shù)第二段中的“They thought this work is not a stepping stone to establishing methods for obtaining live born human clones. Instead, this clearly remains a very foolish thing to attempt, it would be far too inefficient, far too unsafe, and it is also pointless.“和最后一段中的“Despite limitations, they treat this breakthrough a novel model system for scientists studying human biology and disease.“可知，克隆一只猴子的成功率并不高。故選D?！军c(diǎn)評(píng)】本題考點(diǎn)涉及細(xì)節(jié)理解，詞義猜測(cè)和推理判斷三個(gè)題型的考查，是一篇科普類(lèi)閱讀，考生需要準(zhǔn)確捕捉細(xì)節(jié)信息，根據(jù)上下文進(jìn)行邏輯推理，選出正確答案。6．閱讀理解 Taking on the task of producing a short movie might seem like an impossible feat, but if you can assemble a good team and if you break down each stage of production into small blocks of task