2022年四川考研英语一试题真题及答案.docVIP

2022年四川考研英语一试题真题及答案 　　Section I Use of English 　　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 untrue, 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 plants’ intelligence 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 plants have ‘brain-like command centers’ at 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 is only ____14____ similar to the firing in a complex animal brain, which is more 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 don’t have nervous systems, the ____17____ that they have consciousness are effectively zero.” 　　And what’s so great about consciousness, anyway? Plants can’t run away from ____18____, so investing energy in a body system which ____19____ a threat and can feel pain would be a very ____20____ evolutionary strategy, according to the article. 　　1. [A] coined [B] discovered [C] collected [D] issued 　　2. [A] attributed [B] directed [C] compar