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托福new tpo 4阅读 Bioluminescent Organisms 题目解析

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Bioluminescent Organisms
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Bioluminescence is the production and emission of light by living organisms. Observed in fireflies, jellyfish, and certain fungi, this light is generated through a chemical reaction involving luciferin and luciferase. Fireflies use bioluminescence to communicate, facilitating mating and deterring predators. Jellyfish use light to startle predators, providing an opportunity to escape. Some deep-sea organisms use bioluminescence for hunting, emitting light to attract prey.

Bioluminescence is not limited to animals. Certain fungi, like the ghost fungus, glow in the dark to attract insects that help disperse their spores. Scientists study bioluminescence to develop new technologies, exploring bioluminescent proteins for medical imaging and environmental monitoring. The exact mechanisms of bioluminescence are still not fully understood, despite its intriguing applications.

Ongoing research aims to uncover more about how organisms produce light and why this ability evolved. One area of interest is understanding the genetic and molecular basis of bioluminescence. As scientists delve deeper into the mysteries of bioluminescence, they may discover even more ways to harness this natural phenomenon. This has led to breakthroughs in several scientific fields, including genetics and biotechnology, demonstrating the wide-ranging potential of studying bioluminescence.

1.The word “emission” in the first paragraph is closest in meaning to

你的答案:
正确答案:B
题目解析:
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题干:第一段中的“排放”一词的意思和下面哪个选项意思最接近?选项:A.隐藏;隐瞒 B.产生 C.预防 D.扰乱 词汇题,在句子Bioluminescence is the production and emission of light by living organisms.中,“production(产生)” 和 “emission(发射 / 释放)” 是并列关系,共同描述生物发光的两个环节 —— 先 “产生” 光,再 “释放” 光。选项A 隐藏,与排放意思相反,错误。选项B虽然 “production” 和 “emission” 在句中并列,但 “emission” 更侧重 “释放、发射” 的动作,和 “产生” 是递进的两个步骤,语义最接近,因此正确。选项C预防与排放无关,错误。选项D扰乱与排放无关,错误。

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