2022考研英语一真题全文及解析(2)

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.compared D.confined
3.A.unless B.when C.once D.though
4.A.cope with B.consisted of C.hinted at D.extended in