考研-2022英语一真题.pdf

2022年全国硕士研究生入学统一考试英语 （一）真题及答案解析 （完整版） Section I Use of English Directions: Read the following text. Choose the best word(s) for each numbered blank and mark A, B, C or D on the ANSWER SHEET. (10 points) The idea that plants have some degree of consciousness first took root in the early 2000s;the term plant neurobiologywas 1 around the notion that some aspects of plant behavior could be 2 to intelligence inanimals. 3 plantslackbrains,thefiringofelectricalsignalsintheir stemsand leavesnonethelesstriggeredresponsesthat 4 consciousness,researcherspreviously reported. But such an idea isuntrue, according to a new opinion article.Plant biology is complex and fascinating, but it 5 so greatly from that of animals that so-called 6 of plantsintelligence is inconclusive, the authors 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 claimed that plantshavebrain-like command centersat their root tips. This_11_ makes sense if you simplify the workings 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 isonly_ 14 similar to the firing in a complex animalbrain,which ismore than a mass of cells that communicate by electricity, Taiz said. For consciousness to evolve, a brain with a threshold 15 of complexity and capacity is required, he 16 .Since plants dont have nervous systems, the 17 that they have consciousness are effectively zero. Andwhatssogreataboutconsciousness,anyway?Plantscantrunawayfrom 18 ,soinvesting energyinabodysystemwhich 19 athreatandcanfeelpainwouldbeavery 20 evolutionary strategy, according to the article. 1. [A] coined [B] discovered