“OH DEAR! Oh dear! I shall be too late!” So muttered the White Rabbit just before he plunged into Wonderland, with Alice in pursuit. Similar utterances have been escaping the lips of European physicists, as it was confirmed last week that their own subterranean Wonderland, a new machine called the Large Hadron Collider, will not now begin work until May 2008. This delay may enable their American rivals to scoop them by finding the Higgs boson—predicted 43 years ago by Peter Higgs of Edinburgh University to be the reason why matter has mass, but not yet actually discovered.
The Large Hadron Collider is a 27km-long circular accelerator that is being built at CERN, the European particle-physics laboratory near Geneva, specifically to look for the Higgs boson. When it eventually starts work, it will be the world's most powerful particle collider. It will also be the most expensive, having cost SFr10 billion ($8 billion) to build. The laboratory had hoped it would be ready in 2005, but the schedule has slipped repeatedly.
The most recent delay came at the end of March, with the dramatic failure of a magnet assembly that had been supplied by CERN's American counterpart, the Fermi National Accelerator Laboratory (Fermilab) near Chicago. This device was one of four designed to focus beams of particles before they collide in the experimental areas. Admittedly, it had been placed under extreme conditions when it failed, but such forces are to be expected from time to time when the machine is running normally. The magnets have yet to be fixed, although physicists think they know how to do it.
Other, smaller hitches have compounded the problem. The collider has been built in eight sections, each of which must be cooled to temperatures only just above absolute zero. This is because the magnets used to accelerate the particles to the high energies needed for particle physics rely on the phenomenon of superconductivity to work—and superconductivity, in turn, needs extremely low temperatures. Unfortunately, the first of the eight sections took far longer to chill than had been expected.
If, as the other seven sections are cooled, further problems emerge, the start date will have to be put back still further. It takes a month to cool each section, and a month to warm each one back up to normal temperatures again. If it took, say, a month to fix any problems identified as a section cooled, each cycle would postpone the start date by three months.
To accelerate progress (as well as particles), CERN's management decided last week to cancel an engineering run scheduled for November. Instead of beginning slowly with some safe-but-dull low-energy collisions, the machine's first run will accelerate its particles to high energies straight away.
Such haste may be wise, for rumours are circulating that physicists working at the Tevatron, which is based at Fermilab and is currently the world's most powerful collider, have been seeing hints of the Higgs boson. Finding it would virtually guarantee the discoverer a Nobel Prize—shared jointly, no doubt, with Dr. Higgs. Hence the rush, as hundreds of physicists head down the rabbit hole, seeking their own adventures in Wonderland.
1. The sentences in Alice in Wonderland are cited in the first paragraph in order to _____.
[A] illustrate that the new machine European physicists have invented is full of wonder
[B] describe the mood of the European physicists facing the delay of the Large Hadron Collider
[C] tell people that the European physicists will put off the presentation of their new machine
[D] reflect the public's eagerness in using the Large Hadron Collider
2. The word “scoop” (Line 4, Paragraph 1) most probably means _____.
[A] forestall
[B] defeat
[C] surpass
[D] vanquish
3. Which one of the following statements is TRUE of Peter Higgs' contribution in this field?
[A] It was him who initiated the idea that there existed such a boson to make matter have mass.
[B] He made the famous estimate that human beings would find out such a boson in the future.
[C] He claimed with convincing evidence that America would outrun Europe in discovering the Higgs boson.
[D] It was him who first discovered the boson which makes matter have mass.
4. The schedule of the Large Hadron Collider has slipped repeatedly because of the following reasons except that _____.
[A] the device of focusing beams of particles was having some problem
[B] it took longer to cool down the superconductivity so that the collider could work normally
[C] it took a very long period to make eight sections cool down or regain temperature
[D] there happened a dramatic failure of a magnet assembly which was not beyond expectation
5. CERN's management decided to have the machine's first run accelerate its particles straight away because _____.
[A] they are afraid that American researchers will get to see the Higgs boson ahead of them
[B] the safe-but-dull low-energy collision was too old-fashioned
[C] they wanted to dispel the rumours that physicists at the Tevatron have been seeing hints of the Higgs boson
[D] they wanted to have a try of the new way of accelerating particles
1. The sentences in Alice in Wonderland are cited in the first paragraph in order to _____.
[A] illustrate that the new machine European physicists have invented is full of wonder
[B] describe the mood of the European physicists facing the delay of the Large Hadron Collider
[C] tell people that the European physicists will put off the presentation of their new machine
[D] reflect the public's eagerness in using the Large Hadron Collider
1. 第一段引用了《愛麗絲漫游奇境記》中的句子,是為了 _____。
[A] 說明歐洲物理學(xué)家發(fā)明的新機(jī)器充滿了奇跡
[B] 描寫歐洲物理學(xué)家對于“大型強(qiáng)子對撞機(jī)”推遲使用的心情
[C] 告訴人們,歐洲物理學(xué)家將要推遲展示其新機(jī)器
[D] 反映了公眾想要使用“大型強(qiáng)子對撞機(jī)”的急切心情
答案:C 難度系數(shù):☆☆☆☆
分析:推理題。根據(jù)第一段,所引用的句子是表明“太晚了”,聯(lián)系到物理學(xué)家要推遲推出新機(jī)器,可以看出,這只是反映他們推遲了這個項(xiàng)目。因此,答案為C。
2. The word “scoop” (Line 4, Paragraph 1) most probably means _____.
[A] forestall
[B] defeat
[C] surpass
[D] vanquish
2. scoop這個詞(第一段第四行)最有可能的意思是 _____。
[A] 先于…行動
[B] 擊敗
[C] 超越
[D] 征服
答案:A 難度系數(shù):☆
分析:猜詞題。根據(jù)上下文,如果美國對手先發(fā)現(xiàn)西格斯玻色子,那么也就意味著搶在了歐洲人的前面,因此,答案為A。
3. Which one of the following statements is TRUE of Peter Higgs' contribution in this field?
[A] It was him who initiated the idea that there existed such a boson to make matter have mass.
[B] He made the famous estimate that human beings would find out such a boson in the future.
[C] He claimed with convincing evidence that Amer-ica would outrun Europe in discovering the Higgs boson.
[D] It was him who first discovered the boson which makes matter have mass.
3. 關(guān)于彼得·西格斯在該領(lǐng)域內(nèi)的貢獻(xiàn),下列哪項(xiàng)陳述是正確的?
[A] 正是他首先提出存在著一種玻色子,令物質(zhì)有質(zhì)量。
[B] 他做出了人類在未來可以找到這種玻色子的著名預(yù)言。
[C] 他憑借令人信服的證據(jù),聲稱美國將先于歐洲發(fā)現(xiàn)西格斯玻色子。
[D] 正是他首先發(fā)現(xiàn)了令物質(zhì)擁有質(zhì)量的玻色子。
答案:A 難度系數(shù):☆☆☆
分析:細(xì)節(jié)題。根據(jù)第一段最后一句:This delay may enable their American rivals to scoop them by finding the Higgs boson—predicted 43 years ago by Peter Higgs of Edinburgh University to be the reason why matter has mass, but not yet actually discovered. 彼得·西格斯只是預(yù)言了玻色子是事物為什么有質(zhì)量的原因,因此,選項(xiàng)A為正確答案。
4. The schedule of the Large Hadron Collider has slipped repeatedly because of the following reasons except that _____.
[A] the device of focusing beams of particles was having some problem
[B] it took longer to cool down the superconductivity so that the collider could work normally
[C] it took a very long period to make eight sections cool down or regain temperature
[D] there happened a dramatic failure of a magnet assem-bly which was not beyond expectation
4. “大型強(qiáng)子對撞機(jī)”的計(jì)劃日程被不斷推遲,是因?yàn)槌铝?_____ 外的其他原因。
[A] 聚焦粒子束的裝置出現(xiàn)了問題
[B] 需要比想象中更長的時間才能把超導(dǎo)電性冷卻下來,這樣對撞機(jī)才可以正常工作
[C] 需要很長的時間來讓八個部分冷卻下來或恢復(fù)溫度
[D] 磁鐵組出現(xiàn)了嚴(yán)重的問題,這并不是意料之外的事
答案:B 難度系數(shù):☆☆☆
分析:細(xì)節(jié)題。根據(jù)文章第三、第四和第五段有關(guān)計(jì)劃日程被不斷推遲的原因,第三段提到了磁鐵組出了問題,這是用來聚焦粒子束的四個裝置之一,選項(xiàng)A和D表述的是這個原因。第四段和第五段提到了將八個部分冷卻下來需要很長時間,選項(xiàng)C符合這點(diǎn)。選項(xiàng)B本身的說法有問題——并不是超導(dǎo)電性需要冷卻下來,而是超導(dǎo)電性需要低溫,而其他的部分需要冷卻。因此,選項(xiàng)B是正確答案。
5. CERN's management decided to have the machine's first run accelerate its particles straight away because _____.
[A] they are afraid that American researchers will get to see the Higgs boson ahead of them
[B] the safe-but-dull low-energy collision was too old-fashioned
[C] they wanted to dispel the rumours that physicists at the Tevatron have been seeing hints of the Higgs boson
[D] they wanted to have a try of the new way of accelerating particles
5. CERN管理層決定第一次運(yùn)行對撞機(jī)時就將粒子直接加速,這是因?yàn)?_____。
[A] 他們擔(dān)心美國研究者會在他們之前看到西格斯玻色子
[B] 安全但很遲鈍的低能量碰撞太老套了
[C] 他們想要打消Tevatron的物理學(xué)家已經(jīng)看到西格斯玻色子的謠言
[D] 他們想要嘗試加速粒子的新方法
答案:A 難度系數(shù):☆☆☆☆
分析:推理題。根據(jù)第六段,歐洲的研究人員為了加速進(jìn)程才做出了這樣的決定,結(jié)合第七段,有傳聞?wù)f,在Tevatron工作的物理學(xué)家已經(jīng)看到了西格斯玻色子的跡象,歐洲還是怕美國超過他們,因此,選擇了這樣的策略。因此正確答案為A。
“噢,天吶!噢,天吶!我可能太晚了!”白兔在陷入奇境之前這樣咕噥著,愛麗絲在后面追趕著它。類似的句子也出現(xiàn)在歐洲物理學(xué)家的口中,因?yàn)樯蟼€星期他們也證實(shí)了自己的地下奇境——一種叫做“大型強(qiáng)子對撞機(jī)”的新機(jī)器——將推遲到2008年5月份投入使用。這個推遲可能會讓他們的美國對手搶先發(fā)現(xiàn)西格斯玻色子。愛丁堡大學(xué)的彼得·西格斯在43年前就預(yù)言,玻色子是事物有質(zhì)量的原因,但是目前還沒有真正發(fā)現(xiàn)這種玻色子。
大型強(qiáng)子對撞機(jī)是一個27公里長的環(huán)形粒子加速器,在日內(nèi)瓦附近的歐洲粒子物理實(shí)驗(yàn)室CERN建成,目的就是為了尋找西格斯玻色子。在加速器開始工作時,它將成為世界上最強(qiáng)大的粒子對撞機(jī),也會成為世界上最昂貴的對撞機(jī),價值100億瑞士法郎(合80億美元)。實(shí)驗(yàn)室本來希望在2005年就可以準(zhǔn)備就緒,但其日程卻被一再推遲。
最近的一次推遲發(fā)生在3月底,是因?yàn)镃ERN的美國部門位于芝加哥附近的菲爾米國家加速器實(shí)驗(yàn)室提供的磁鐵組出現(xiàn)了嚴(yán)重的問題。該設(shè)備是在粒子在實(shí)驗(yàn)區(qū)域內(nèi)進(jìn)行碰撞之前聚焦粒子束的四個裝置之一。不可否認(rèn),設(shè)備被放在極端的條件下才出現(xiàn)了問題,但是機(jī)器正常運(yùn)行時這種情況也時有發(fā)生。磁鐵組還沒有修好,但物理學(xué)家已經(jīng)知道應(yīng)該如何處理了。
其他更小的故障使問題變得更為復(fù)雜。對撞機(jī)由八個部分組成,每個部分都必須被冷卻到一定溫度,只比絕對零度高一點(diǎn)。這是因?yàn)?,用來加速粒子使其具有高能量的磁鐵組依靠超導(dǎo)電性來工作,而超導(dǎo)電性要求極低的溫度。不幸的是,冷卻八個部分的第一個就用了比預(yù)想的多得多的時間。
如果其余的七個部分都被冷卻了,那么會出現(xiàn)更多的問題,開始使用機(jī)器的日子就會繼續(xù)被推遲。冷卻每個部分要一個月,而將其加溫至正常溫度又需要一個月。如果每個部分都需要用一個月的時間來檢查冷卻過程中出現(xiàn)的問題的話,那么每一輪都會將開工日期推遲三個月。
為了加速進(jìn)程(也為了加速粒子),CERN的管理層上周決定,取消11月份的工程運(yùn)行計(jì)劃。這使得機(jī)器不再從一些安全但是遲緩的低能量碰撞來慢慢開始,而是直接將其粒子加速到具有高能量。
這樣的速度可能是明智的,因?yàn)楝F(xiàn)在有謠言說,在Tevatron工作的物理學(xué)家已經(jīng)看到了西格斯玻色子的跡象。Tevatron是目前世界上最強(qiáng)有力的對撞機(jī), 位于菲爾米國家加速器實(shí)驗(yàn)室。發(fā)現(xiàn)該玻色子的人一定會獲得諾貝爾獎,當(dāng)然,肯定是與西格斯博士一起分享。因此,成百上千的物理學(xué)家爭相來兔子洞,尋找他們自己在奇境中的奇遇。