2022年考研英语一必威体育精装版完整版真题.pdf

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