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1、英语六级新题型选词填空练习题及答案A novel way of making computer memories，using bacteriaFOR half a century，the（1）_of progress in the computer industry has been to do more with less.Moores law famously observes that the number of transistors which can be crammed into a given space（2）_ every 18 months.The amount of da
2、ta that can be stored has grown at a similar rate.Yet as（3）_ get smaller，making them gets harder and more expensive.On May 10th Paul Otellini，the boss of Intel，a big American chipmaker，put the price of a new chip factory at around $10 billion.Happily for those that lack Intels resources，there may be
3、 a cheaper optionnamely to mimic Mother Nature，who has been building tiny（4）_，in the form of living cells and their components，for billions of years，and has thus got rather good at it.A paper published in Small，a nanotechnology journal，sets out the latest example of the（5）_.In it，a group of research
4、ers led by Sarah Staniland at the University of Leeds，in Britain，describe using naturally occurring proteins to make arrays of tiny magnets，similar to those employed to store information in disk drives.The researchers took their（6）_ from Magnetospirillum magneticum，a bacterium that is sensitive to t
5、he Earths magnetic field thanks to the presence within its cells of flecks of magnetite，a form of iron oxide.Previous work has isolated the protein that makes these miniature compasses. Using genetic engineering，the team managed to persuade a different bacteriumEscherichia coli，a ubiquitous critter
6、that is a workhorse of biotechnologyto（7）_ this protein in bulk.Next，they imprinted a block of gold with a microscopic chessboard pattern of chemicals.Half the squares contained anchoring points for the protein.The other half were left untreated as controls.They then dipped the gold into a solution
7、containing the protein，allowing it to bind to the treated squares，and dunked the whole lot into a heated（8）_ of iron salts.After that，they examined the results with an electron microscope.Sure enough，groups of magnetite grains had materialised on the treated squares，shepherded into place by the bact
8、erial protein.In principle，each of these magnetic domains could store the one or the zero of a bit of information，according to how it was polarised.Getting from there to a real computer memory would be a long road.For a start，the grains of magnetite are not strong enough magnets to make a useful mem
9、ory，and the size of each domain is huge by modern computing（9）_.But Dr Staniland reckons that，with enough tweaking，both of these objections could be dealt with.The（10）_ of this approach is that it might not be so capital-intensive as building a fab.Growing things does not need as much kit as making
10、them.If the tweaking could be done，therefore，the result might give the word biotechnology a whole new meaning.newmeaning.A)componentsB)advantageC)standards D)complimentsE)essence F)inspirationG)disadvantage H)doublesI)solution J)resolutionK)devices L)manufactureM)spirit N)productO)technique（二）Nice j
11、uicy AppleALTHOUGH he is still（1）_ things up at Dell，an ailing computer-maker，Carl Icahn has found time to tilt at another tech titan. On August 13th the veteran shareholder activist（2）_that he had built up a stake in Apple，though he stayed mum about exactly how many shares he had bought. Mr Icahns
12、intentions，however，are crystal clear：he wants the consumer-electronics behemoth to expand plans to return some of its whopping $147 billion of cash and marketable securities to shareholders.Mr Icahn is also after more money at Dell，where he has been lobbying with allies against a（3）_ buy-out plan pu
13、t forward by Michael Dell，the firms founder，and Silver Lake，a private-equity firm. His pressing has already forced the buy-out group to raise its initial offer by over $350m，to $24.8 billion and he has taken his（4）_ to the courts in a bid to extract an even higher price.Other tech firms have been at
14、tracting the attention of activist investors too. Earlier this year ValueAct Capital，an investment fund，said it had built up a $2 billion stake in Microsoft. Jaguar Financial，a Canadian bank，has been（5）_ fresh thinking at troubled BlackBerry，which announced on August 12th that it is exploring various（6）_options，including alliances and a possible sale. And Elliott Management，a hedge fund，has been lobbying for change at NetApp，a data-storage firm that it thinks could do more to improve
