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2022考研英语一真题全文及解析
Section 1UseofEnglish
Directions:
Readthe followingtext.Choosethebestword(s) for each numberedblank andmark [A], [B],
[C].or [D]ontheANSWER SHEET.(10points)
Theideathatplantshave somedegree ofconsciousness firsttookroot in theearly 2000s;theterm plant
neurobiology was (1) around the notion that some aspects of plant behavior could be .2 ) to intelligence in
(
animals. (3 ) plants lack brains, the firing of electrical signals in their stems and leavesnonetheless triggered
responsesthat (4)consciousness,researcherspreviously reported.
But such an idea isuntrue,according to anew opinion article.Plant biology iscomplex and fascinating,
but it ( 5) sogreatly from that ofanimalsthat so-called ( 6) ofplantsintelligence isinconclusive,theauthors
wrote.
Beginning in 2006, some scientists have (7) that plants possess neuron—like cells that interact with
hormones and neurotransmitters, (8) “a plant nervous system, (9) to that in animals, said lead study author
Lincoln Taiz,They (10) claimedthatplantshave brain-likecommandcentersattheirroottips.
This (11) makes sense ifyou simplify theworkings of a complex brain, (12 ) it to an array of electrical
pulses; cells in plants also communicate through electrical signals. (13 the signaling in a plant is only (14)
),
similar to the firing in a complex animal brain, which is more than a mass of cells Is that communicate by
electricity,Taiz said.
For consciousnessto evolve, a brain with a threshold (15 ) of complexity and capacity isrequired, he
(16) ,Sinceplantsdonthavenervoussystems,the(17)thattheyhaveconsciousnessareeffectively zero.
Andwhatssogreatabout consciousness,anyway?Plantscantrun away from ( 18) .soinvestinge
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