六级阅读模拟训练附答案和精讲

　　The British couple's _3_ about gender selection led them to Virginia, US where a new sperm (精子)-separation technique, called MicroSort, was under _4_ . When MiShel became pregnant,she gave birth to a daughter. They will try to have a second daughter using the technique laterthis year.

　　This is not only a _5_ effective way to select a child’s gender. It also brings a host of ethical(伦理的)and practical considerations—especially for the majority of families who use thetechnique for _6_ reasons.

　　The clinic offers sex selection for two purposes: to help couples _7_ passing on a gender-linked_8_ disease and to allow those who already have a child to “balance” their family by having ababy of the opposite sex.

　　The technology is still _9_. However, Blauer says the company has an _10_ success rate: 91per cent of the women who become pregnant after sorting for a girl are successful, while 76 percent who sort for a boy and get pregnant are successful.

　　A) genetic B) overlapped C) impressive D) unaffected

　　E) perpetually F) investigation G) inquiries H) feats

　　I) disorder J) gropes K) experimental L) seemingly

　　M) elicit N) nonmedical O) avoid

　　解题思路

　　1. [I]此处应为单数名词。根据该句中的blind—词可以知道句中提到的condition其实是一种“疾病”或“不正常”的情况”,disorder为本题答案。

　　2.[D]此处应为名词、动词的分词形式或形容词,在句中作表语。根据该段对这种遗传病的描述可以知道生女孩可以避免遗传到这种病，因此，空格处的单词应该表示“没亊”、“不受影响”等意思，因此本题答案为unaffected。

　　3.[G]空格前的所有格couple’s表明此处需填入名词，作句子主语。inquiries与about搭配，表示“咨询…”,符合此处语义,表明这对英国夫妻咨询与性别相关的事。

　　4.[F]此处应为名词，可与under搭配，表明精子分离技术的现状。在词库的名词中,investigation最适合文中语境，under investigation表明这种技术正处于发展研究当中。

　　5.[L]此处应为副词，形容这种新技术有效使用的程度或范围。根据上文描述的个案，可以知道这种技术“看起来”很有用，词库的副词中seemingly符合句意，因此为本题答案。

　　6.[N]此处应填人reasons的修饰成分，可为名词、形容词或动词分词。从破折号前的ethical and practicalconsiderations可以知道空格处提到的原因可能有悖伦理标准，即并非因为医学上的需要而使用这种技术，由此可见，nonmedical“非医学的”是答案。

　　7.[O]此处应填人动词原形，构成短语help sb. do sth.。空格后的passing on a... disease(把……疾病往下传)表明这种情况是要“避免”或“杜绝”的，故avoid符合语义要求。

　　8.[A]此处应填人修饰disease的词，可为名词、形容词或动词分词。从本文首段提到的个案和本句提到的genderlinked可以推断空格处的单词应表明“遗传性”疾病，因此genetic为本题答案。

　　9.[K]此处应为名词、形容词或动词分词，作句子表语。从本句中的still和下句However引出的内容可以知道，这种技术虽然成功率很髙，但研究仍没有定论，因此本题答案应为experimental，表明技术仍处于“试验阶 段”。本文提到的技术与医学有关，所以不选nonmedical“非医学的”。

　　10.[C]空格处应为success rate的修饰语，可为名词、形容词或动词分词，an表明该词以元音开头。根据冒号后的数据91%和76%,可知成功率很高，故填入impressive“给人印象深刻的，令人赞叹的”。

　　Rather than using custom machine tools to build early models of new parts, Ford is now using3-D printing technology to design and test its engineers’ latest ideas. The new method allowsproduct developers to have a _1_ in their hands in as little as a week after they create a newdesign-compared with having to wait three to four months _2_.

　　“We’re building more and more parts every day using this _3_,”says Harold Sears,a technicalexpert in rapid manufacturing at Ford’s design facility in Dearborn, Mich. Ford’s new hybridtransmission was developed on a 3-D printer that costs about $300,000 and which can turn apile of aluminum powder into a working prototype in a day or two.

　　While low-cost 3-D printing by consumers and small businesses looks like a market now readyfor takeoff, large businesses have already _4_ advanced versions of the technology. The resulthas been a _5_ improvement in the product-development process across a wide range ofindustries, including the _6_ of cars, consumer electronics, safety equipment and medicaldevices.

　　The process has done more than just save time and money. Engineers say rapid prototypingusing 3-D printing is producing more _7_, higher-quality products—from custom-fitted bicyclehelmets to better-sounding ear buds and loudspeakers.

　　Instead of waiting for tools and parts to come back from outside machine shops or injection,molding houses, product developers on tight _8_ now get more hands-on time to test theirmodels. 3-D printers allow them to test and _9_ more versions of their prototypes—in somecases tripling the number of duplicates of a new product that can be _10_ before beingproduced on a large scale.

　　A)previously B) thereafter C) process D) elastic

　　E) deadlines F) manufacturing G) significant H) innovative

　　I)ignited J) embraced K) lubricate L) prototype

　　M) refined N) update O) mechanisms

　　解题思路

　　1.[L]冠词a提示空格处应填入名词。该段概括介绍了 3-D打印这一新技术,首句指出运用新技术建造初期模型，第2句则补充说明该技术的优势。根据上下文和空格后的in their hands可推知，空格所需名词应与earlymodels 同义，故选用 prototype

　　2.[A]此处需填人副词，修饰have to wait...。根据本句内容可知，有了 3-D打印技术之后，等待模具的时间大大缩短，而不像“以前”要等3、4个月，可见此处应选用previously。

　　3.[C] this提示此处应填入名词，且该名词在上文有具体所指。上文提到的主要内容是3-D打印这一“新技术”,此处的名词应该带有“技术”、“方法”等类似的意思,据此在名词库中选用process。

　　4.[J]解答本题需先弄清advanced的词性。这里advanced是形容词“先进的”,用于修饰名词versions。因此空格处应填入过去分词与have already连用，充当句子谓语。词库中embraced“采用”符合语境,说明一些大企 业使用了这种技术。

　　5.[G] a... improvement提示空格处应填人名词、形容词或分词作定语。根据后面提到的这一技术在各行业的应用，可知其影响重大，应选用包含积极意义的词汇。不定完词a提示不能选用innovative,词库中significant符合句意。

　　6.[F]定冠词the提示此处应填入名词。前面讲到福特汽车采用3-D打印技术制造最初模型，可知该技术可运用于汽车制造，词库中manufacturing符合句意。

　　7.[H] more...和higher-quality并列作定语修饰products。本段仍然是讲3-D技术的优点，故推断空格是一个褒义词,innovative符合句意。

　　8.[E]空格应填入名词，与on tight...构成介词短语，作后置定语修饰前面的product developers。空格前的tight“紧的”与后面的more hands-on time前后形成对比，由此可见3-D技术出现之前产品研发人员的时间紧迫，deadlines填入文中构成短语on tight deadlines，表示“时间紧迫，限期很短”，符合上下文语境。

　　9.[N]空格前的and表明空格应该是和test并列的动词原形。根据其后所接的宾语more versions of theirprototypes,选用update，意为“研发人员可以利用3-D打印技术不断测试和更新模具”。

　　10.[M]此处应填入名词、形容词或动词的分词形式。3-D打印技术主要应用于产品的研发、调整阶段，因此产品在正式投人生产前还可以修改。填入空格的词应包含“修改，调整”之意，动词refined“精炼;使完善”符合句意。