2022年全国研究生考试英语(一)真题及答案.pdfVIP

2022年考研英语（一）真题及答案 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 ANSWE SHEET. (10 points) 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 dont have nervous systems, the_____(17)that they have consciousness are effectively zero. And whats so great about consciousness, anyway? Plants cant run away from_____(18). So investing energy in a body system which_____(19)a threat and can f