首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
Many people dream of having a smarter brain. Princeton neurobiologist Joseph Z. Tsien found the key. In September he announced
Many people dream of having a smarter brain. Princeton neurobiologist Joseph Z. Tsien found the key. In September he announced
admin
2015-02-17
64
问题
Many people dream of having a smarter brain. Princeton
neurobiologist Joseph Z. Tsien found the key. In September he
announced that he built a better mouse by altering a gene that 【M1】______
affects learning and memory. A similar process of gene
manipulation might conceivably be used one day to boost up 【M2】______
intelligence in humans.
The secret lies in a feature of brain cells which called the 【M3】______
nomda receptor, which Tsien likes to a cylindrical tube or window 【M4】______
that mediates the flow of information. When the window is open,
chemicals called neurotransmitters flow through easily and
memory is registered or stored. Tsien noticed that the receptor 【M5】______
worked more efficiently when teamed with the gene NR2B, so he
introduced extra NR2B genes into a batch of fertilized mouse eggs.
In a normal mouse, the memory window is open in just 【M6】______
150-thousandths of a second. In Tsien’s specifically engineered 【M7】______
mice, the window opens for 250-thousandths of a second, long
enough to make a remarkable impression in memory retention. 【M8】______
When he pitted his mice with common mice, they won paws down. 【M9】______
Ordinary mice could recognize a Lego block for 12 hours, but
smart mice could remember the block for up to three days. "That’s
a profound enhancement," Tsien says.
Can it be done with humans? Maybe, so genetic engineering 【M10】______
will have to make some extraordinary advances first. And some
thorny ethical issues will have to be resolved. Meanwhile, Tsien
promises to keep his furry little geniuses locked up in a lab, far
from your larder. "Otherwise," he says, "you might need a smart cat
or a smart mousetrap to catch them."
【M8】
选项
答案
impression→difference
解析
本处to make a re—markable impression既不符合语言习惯,在本句中也无法解释得通。而to make adifference则是一个固定搭配,意思是指产生重要影响,符合本句意思。
转载请注明原文地址:https://kaotiyun.com/show/MYdO777K
0
专业英语八级
相关试题推荐
Healthyadultstakeapproximately10-14breathsperminute,butsomepeoplebreathe20ormoretimes—thiscanleadtofeeling
Englishisoneoftheworld’smostwidelyspokenlanguages.ThisispartlybecauseitwasthelanguageoftheBritishEmpire.T
Englishisoneoftheworld’smostwidelyspokenlanguages.ThisispartlybecauseitwasthelanguageoftheBritishEmpire.T
Aswehaveseen,thereisnothingaboutlanguageassuchthatmakeslinguisticidentitycoextensivewithnationalidentity."If
Engaginginahobbylikereadingabook,makingapatchworkquiltorevenplayingcomputergamescandelaytheonsetofdementi
Youngpeoplearefacinganuncertainfuture.Asthe21stcenturydawned,theywerepromisedawealthofprospectsunless【M1】____
WhichofthefollowingworksisNOTwrittenbyArthurMiller?
Morphologyisthestudyof______.
ComputerCrimeI.IntroductionCurrentsituation;theincreaseinnumberandtypeofcomputercrimeII.Featuresofcomputer
ComputerCrimeⅠ.IntroductionCurrentsituation:theincreaseinnumberandtypeofcomputercrimeⅡ.Featuresofc
随机试题
—Iwillcometoattendyourlectureat:tomorrow—I’msorry,bythenmylecturewillhaveendedandI______myguestsinmyoffi
下列药物不属于桃红四物汤组方药物的是
甲欠乙400万,甲将自己的房屋无偿为戊向己借款的合同提供担保,该担保符合形式要件。甲又将该房屋以极低价格转让给了丙,该买卖也符合形式要件。后因甲无力清偿乙的债权,戊无力清偿其债权人已的债权,己欲行使对甲之房屋的抵押权。
关于雇主的保证责任,下列说法不正确的是( )。
销售机构在进行市场细分时应遵循的原则中,()是指每个细分市场有明显的区分标准,让销售机构能够清楚地认识不同细分市场的客户差异,提供个性化的产品和服务,以确保营销策略具有针对性。
()是企业营销战略的核心,也是决定企业营销成败的关键。
甲公司为增值税一般纳税人,适用的增值税税率为17%,适用的所得税税率为25%,按净利润的10%计提盈余公积。甲公司与收入有关的资料如下:(1)2012年3月25日,甲公司向丙公司销售一批商品,不含增值税的销售价格为3000万元,增值税税额为510万元,该
下列关于我国文字、书法知识,正确的一项是()。
学习迁移是指一种学习对另一种学习的影响,即已获得的知识经验、知识结构、动作技能、学习态度、策略和方法等与新知识、新技能之间所发生的影响。下列选项中,没有体现学习迁移能力的是()。
AttheentrancetoabigofficeinLondon,therewasapieceofpaperwhichallmenhadtowritenamesonwhentheyarrivedeach
最新回复
(
0
)