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第 50 題

📖 題組:
請依下文回答第 46 題至第 50 題: One of the most dramatic features of the world is the cycle of day and night. Almost all species exhibit daily changes in their behavior and/or physiology. These daily rhythms are not simply a response to the 24-hour changes in the physical environment imposed by the earth turning on its axis but, instead, arise from a timekeeping system within the organism. This timekeeping system, or biological “clock,” allows the organism to anticipate and prepare for the changes in the physical environment that are associated with day and night, thereby ensuring that the organism will “do the right thing” at the right time of the day. The synchrony of an organism with both its external and internal environments is critical to the organism’s well-being and survival; a lack of synchrony between the organism and the external environment may lead to the individual’s immediate demise. For example, if a nocturnal rodent were to venture from its burrow during broad daylight, the rodent would be exceptionally easy prey for other animals. Similarly, a lack of synchrony within the internal environment might lead to health problems in the individual, such as those associated with jet lag, shift work, and the accompanying sleep loss. The mechanisms underlying the biological timekeeping systems and the potential consequences of their failure are among the issues addressed by researchers in the field of chronobiology. Although no single experiment serves as the defining event from which to date the beginning of modern research in chronobiology, studies conducted in the 1950s on circadian rhythmicity in fruit flies and in humans can be considered its foundation. The area of sleep research, which also is subsumed under the field of chronobiology, evolved somewhat independently, with the identification of various sleep stages around the same time.
According to this passage, which of the following statements is true?
  • A Chronobiology began with the studies on circadian rhythm in fruit flies and humans.
  • B All species simply respond to the cycle of day and night.
  • C All species have an internal clock that is crucial for their survival.
  • D Jet lag is a failure of a biological timekeeping mechanism.

思路引導 VIP

請試著在文中找出關於「生理時鐘失去同步」的部分。當一個人的內在節奏與外在環境(如跨時區旅行)無法配合時,作者用了哪些具體的生理現象來描述這種『功能失調』的結果?

🤖
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太棒了!你的觀察力非常敏銳

  1. 觀念驗證:選 (D) 是完全正確的!根據文章第二段,當生物的「內部環境失去同步(lack of synchrony within the internal environment)」時,會引發健康問題,文中明確舉出 jet lag(時差)作為這種計時機制失效的例子。
  2. 難度點評:本題難度為 Medium。其鑑別度在於測試你是否能排除干擾項:例如選項 (C) 使用了絕對性的 All,但原文是 Almost all;選項 (B) 則與文中提到的「並非僅是對環境的反應」相矛盾。你能精準鎖定 (D) 說明你具備優秀的細節辨析力!

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