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题型:完形填空 难度:0.65 引用次数:346 题号:16115374

Science may never know the secrets to memories of the California sea hare, a foot-long sea snail. But a research team claim to have made progress in _______ the simplest kind of memory a mollusk (软体动物) might form, and, with a swift injection, managed to _______ one sea snail’s memory to another.

The kinds of memories that start a defensive reaction in the snails are encoded not in the _______between brain cells, but in RNA molecules (分子), according to David Glanzman, a biologist at UCLA. To _______ the idea, Glanzman implanted wires into the tails of California sea hares and gave them a series of electric shocks. The procedure made the animals so _______ that when they were touched, they contracted parts of their bodies intensely. Glanzman compares the reaction to being nervous after an earthquake: the memory of the event causes a(n) _______ response to any loud noise. After sensitizing the sea snails, Glanzman took RNA out from them and _______ it into new sea snails to see what would happen. He then found the new ones are _______ sensitized, suggesting the “memory” of the electrical shocks had been transplanted. According to Glanzman and his research team, the experiment shows that _______ parts of the memory trace are held in RNA, rather than in the connectivity of brain cells.

However, the work has not yet found widespread ________. “Further work needs to be carried out to determine whether these phenomena are obvious and what is the ________ of such phenomena,” said Prof Vann at Cardiff University. “While a sea snail is a fantastic model, we must be very ________ in drawing comparisons to human memory processes, which are much more complex.”

Tomás Ryan at Trinity College Dublin, is ________. “This work takes us down an interesting road, but I have doubt about it and I don’t think they’ve transplanted a memory,” he said. “This work tells me that maybe the most basic behavioral responses involve some kind of change in the animal.”


________, Ryan added that such creative thinking about memory was in great need: “In a field full of acceptance but lacking ________, we need as many new ideas as possible.”1.
A.deletingB.disturbingC.refreshingD.understanding
2.
A.transferB.adjustC.compareD.relate
3.
A.connectionsB.conflictsC.secretsD.distances
4.
A.promoteB.testC.eliminateD.impose
5.
A.sensitiveB.adaptableC.strongD.relaxed
6.
A.necessaryB.peacefulC.unconsciousD.impossible
7.
A.plungedB.investedC.translatedD.injected
8.
A.crazilyB.dangerouslyC.scarcelyD.equally
9.
A.optionalB.essentialC.memorialD.virtual
10.
A.associationB.recognitionC.innovationD.publication
11.
A.depthB.applicationC.basisD.description
12.
A.imaginativeB.carefulC.ambitiousD.speedy
13.
A.supportedB.persuadedC.unappreciatedD.unconvinced
14.
A.NeverthelessB.EventuallyC.For exampleD.As a result
15.
A.expressionB.likelihoodC.suspicionD.disturbance
2022·上海松江·二模 查看更多[5]
【知识点】 动物 科普知识 说明文

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A.watchB.knowC.hearD.tell
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A.uncoveredB.unexpectedC.unnoticedD.untouched
3.
A.lookedB.smelledC.soundedD.saw
4.
A.rainB.stormC.snowD.wind
5.
A.heardB.taughtC.droveD.insisted
6.
A.foundB.caughtC.huntD.missed
7.
A.untilB.butC.thatD.since
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A.loveB.situationC.demandD.desire
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A.placeB.homeC.treeD.nest
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A.newsB.animalC.weatherD.danger
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A.findB.saveC.cureD.guide
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A.devotedB.adaptedC.exposedD.attracted
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A.showB.performanceC.saleD.adoption
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A.layB.barkedC.emergedD.fled
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A.laughterB.tearsC.cryD.anger
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A.brokenB.panickedC.movedD.delighted
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A.betterB.worseC.wrongD.right
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A.commonB.onlyC.regularD.frequent
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A.tableB.guideC.friendD.cat
2.
A.StrangelyB.SurprisinglyC.InterestinglyD.Luckily
3.
A.tryB.placeC.changeD.settle
4.
A.safeB.boringC.difficultD.funny
5.
A.touchingB.enteringC.enjoyingD.cleaning
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A.smilingB.washingC.walkingD.swimming
7.
A.seeB.hurtC.feelD.free
8.
A.changeB.emergencyC.serviceD.help
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A.stepB.signC.returnD.boat
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A.angryB.worriedC.calmD.excited
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A.cellphoneB.purseC.keyD.card
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A.sailedB.arrivedC.finishedD.left
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A.showB.takeC.reachD.tie
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A.shipB.duckC.legD.body
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A.seriousB.longC.goodD.disappointing
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A.homelessB.beautifulC.strongD.little
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A.stillB.neverC.hardlyD.really
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