2022年考研英语一真题案及答案解析版.pdf

2022年全国硕士研究生入学统一考试 英语 （一）试题 SectionI UseofEnglish Directions: Read the following text. Choose the best word(s) for each numbered blank and mark A, B, C or D ontheANSWER SHEET.(10points) The idea that plants have some degree of consciousness first took root in the early 2000s; the term “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 leaves nonetheless triggered responses that __4__ consciousness, researchers previously reported. But such an idea is bunk, according to the authors ofthe new article.Plant biology is complex and fascinating, but it __5__ so greatly from that of animals that so-called __6__ of plants’ intelligence is intriguing but inconclusive, the scientists wrote. In animals, neurobiology refers to the biological mechanisms through which a nervous system regulates behavior, according to Harvard University’s Mind Brain Behavior Interfaculty Initiative. Over millions of years, brains in diverse animal species have evolved to produce behaviors that experts identify as intelligent: Amongthem arereasoning andproblem-solving,tooluseand self-recognition. 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, a professor emeritus of molecular, cell and developmentalbiology attheUniversity ofCalifornia Santa Cruz. “They __10__ claimed that plants have brain-like command centers at their root tips,” Taiz toldLive Sciencein an email. 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 thro