【正文】 ? 第 72 題 _____________ ? 「 A」 false ? 「 B」 fake ? 「 C」 artificial ? 「 D」 counterfeit ? 【參考答案】 A ? 【參考解析】： 詞。 ? 第 71 題 _____________ ? 「 A」 because ? 「 B」 while ? 「 C」 though ? 「 D」 when ? 【參考答案】 B ? 【參考解析】： 邏輯銜接題。 Ensured 意為“確保的，保證的”； promoted 意為“升職的”；threatened 意為“失業(yè)的 ”。 Support 意為“支持”； identification 意為“身份”； pliment 意為“滿意”，均排除。 ? 第 69 題 _____________ ? 「 A」 support ? 「 B」 identification ? 「 C」 pliment ? 「 D」 resistance ? 【參考答案】 D ? 【參考解析】： 詞義辨析題。 ? 第 68 題 _____________ ? 「 A」 so ? 「 B」 then ? 「 C」 thus ? 「 D」 but ? 【參考答案】 D ? 【參考解析】： 邏輯銜接題。該句意為“由于一些原因，不可能 _________所有各種各樣的公眾群體”，只有 satisfy (滿足 )符合句意，故選 A。根據(jù)上下文此處要表達(dá)“各種各樣的特殊群體”，故選 B。 ? 第 66 題 _____________ ? 「 A」 converse ? 「 B」 diverse ? 「 C」 reverse ? 「 D」 universe ? 【參考答案】 B ? 【參考解析】： 詞義辨析題。該句意為“并且對于這些外在群體， ___________股東、供應(yīng)商、債權(quán)人、政府官員“， such as 為固定用語，意為“例如”，符合句意。該句意為“一個(gè)公司的形象對于公司的 _________起著至關(guān)重要的作用”， the attraction of the firm 意為 u“公司的吸引力”，符合句意，故選 A。其他三項(xiàng)都不能構(gòu)成此搭配，故選 D。 ? 第 63 題 _____________ ? 「 A」 in ? 「 B」 within ? 「 C」 on ? 「 D」 to ? 【參考答案】 D ? 【參考解析】： 慣用搭配題。 ? 語法結(jié)構(gòu)題。 公 眾形象對于一個(gè)企業(yè)起著至關(guān)重要的作用，因此需要保護(hù)好企業(yè)的良好形象，因?yàn)樗鼘ζ髽I(yè)來說是非常有價(jià)值的資產(chǎn)。選項(xiàng) A說要加長染色體的末端，也不正確，末端酶會(huì)使染色體末端的冠狀體結(jié)構(gòu)在細(xì)胞分裂時(shí)變短，可見末端酶才是最關(guān)鍵的，而染色體末端的長短是因?yàn)檫@種酶才產(chǎn)生變化的。本題的干擾項(xiàng)是 D ，控制細(xì)胞分裂的過程。 本題問讓人體細(xì)胞產(chǎn)生癌變的關(guān)鍵因素是什么。根據(jù)這一段的描述，選項(xiàng) D和 B 也是錯(cuò)誤的?？茖W(xué)家們用到的結(jié)締組織和伸細(xì)胞，注入了三種變異基因：一種可以使得細(xì)胞加速分裂；一種會(huì)使兩種控制過度分裂的物質(zhì)無法正常工作；第三種促使末端酶的產(chǎn)生，而末端酶會(huì)使細(xì)胞無限分裂，所有 C 是正確的，促進(jìn)產(chǎn)生末端酶。 第 60 題 To make human cells more mouse like scientists tried _______ 「 A」 to subject them to more genes 「 B」 to keep the division from slowing down 「 C」 to promote the production of telomerase 「 D」 to prevent excessive cells copying 【參考答案】 C 【參考解析】： 推斷題。文中說，這種酶使得位于染色體 末端的被稱為 telomeres 的冠狀結(jié)構(gòu)不會(huì)在每次細(xì)胞分裂時(shí)變短，而這種變短是細(xì)胞衰老過程中得一部分。從那以后，他們了解到了老鼠細(xì)胞與人的細(xì)胞不同，老鼠細(xì)胞中有一種叫做末端酶的生物酶水平較高。 第 59 題 In the 1983 experiment, human cells didn’ t work the way mouse cells did because the former ______ 「 A」 were easier to bee aged 「 B」 checked telomerase in dividing 「 C」 had short ends of chromosomes 「 D」 lacked telomeres for cell division 【參考答案】 A 【參考解析】： 推斷題。雖然這些步驟只是在實(shí)驗(yàn)室的盤子里進(jìn)行，不會(huì)立刻帶來任何治療方法，但在理解疾病這剛面似乎是至關(guān)重要的一步，因此選項(xiàng) B 正確。 第 58 題 White head’ s scientists have succeeded in ______ 「 A」 developing malignant cells in human bodies 「 B」 making normal human cells cancerous 「 C」 controlling the change of human cells 「 D」 changing the genes of cancer cells 【參考答案】 B 【參考解析】： 推斷題。所有很多年來研 究人員一直在攻關(guān)這個(gè)難題。 細(xì)節(jié)題。“ Some people believe that telomerase wasn’ t that important,” says the Whitchead’ s William Hahn, the study’ s lead author.” This allows us to say with some certainty that it is.” 第 57 題 The problem that has been annoying cancer researchers for years is the difficulty in telling ________ 「 A」 linked to an abnormal amount of assertiveness 「 B」 seen as one’ s habitual pattern of behavior 「 C」 taken as part of an ordering sequence 「 D」 expressed to a series of charge 【參考答案】 A 【參考解析】： 文章精要 本文是一篇說明文，介紹了在癌癥研究方面的新突破。 回答 57～ 61 題 Scientists have known for more than two decades that cancer is a disease of the genes. Something scrambles the DNA inside a nucleus, and suddenly , instead of dividing in a measured fashion , a cell begins to copy itself furiously. Unlike an ordinary cell , it never stops. But describing the process isn’ t the same as figuring it out. Cancer cells are so radically different from normal ones that it’ s almost impossible to untangle the sequence of events that determine what changes will turn them cancerous – always without success. According to a report in the current issue of Nature, a team of scientists based at .’ s Whitchead Institute for Biomedical Research has finally managed to make human cells malignant – a feat they acplished with two different cell types by inserting just three altered genes into their DNA. While these manipulations were done only in lab dishes and won’ t lead to any immediate treatment, they appear to be a crucial step in understanding the disease. This is a “ landmark paper,” wrote Jonathan Weitzman and Moshe Yaniv of the Pasteur Institute in Paris , in an acpanying mentary. The dramatic new result traces back to a breakthrough in 1983, when the Whitehead’ s Robert Weinberg and colleagues showed that mouse cells would bee cancerous when subjected to two altered genes. But when they tried such alterations on human cells, they didn’ t work. Since then, scientists have learned that mouse cells differ from human cells in an important respect: they have higher levels of an enzyme called telomerase. That enzyme keeps caplike structures called telomeres on the ends of chromosomes from getting shorter with each round of cell division. Such shortening is part of a cell’ s aging process. And since cancer cells keep dividing forever, the Whitchead group reasoned that making human cells more mouse like might also make them cancerous. The strategy worked. The scientists took connectivetissue and kidney cells and introduce three altered genes – one that makes cells divide rapidly ,another that disables two substances meant to rein in excessive division。 第 56 題 The word “ ritualistically “ in the last paragraph equals something done _________ 「 A」 kindheartedly 「 B」 lightheartedly 「 C」 in away of ceremony 「 D」 with less emphasis 【參考答案】 C 【參考解析】： 語義題。 )再結(jié)合其后的例子推斷可知，那些不合邏輯的反應(yīng)和行為如果被看成是習(xí)慣的行為模式，就是可以理解的。由文章第一段倒數(shù)第二句可知，房主真正的意思是：“我不想修樓梯，我們都能忍受它，為什么你就不能呢？“所有 B（他認(rèn)為沒有必要修樓梯）正確 第 55 題 Some responses and behaviors may appear very illogical, but are justifiable if _______ 「 A」 linked to an abnormal amount of assertiveness 「 B」 seen as one’ s habitual pattern of behavior 「 C」 taken as part of an ordering sequence 「 D」 expressed to a series of charge 【參考答案】 B 【參考解析】： 推斷題。 Let off stean 是固定搭配 ，意為 ”發(fā)牢騷“，發(fā)泄郁積的感情“。 第 53 題 “ I’ m letting off some steam