黃金閱讀 biological clocks - 英檢

關於最後一題
爬了文發現我選的答案和之前板友有疑問的答案是一樣的
黃金閱讀裡給的答案是 126 但我選的是246

用google查了一下
在這個論壇中有找到一些討論
http://club.topsage.com/thread-2257706-1-1.html
說應該是4而不是1
不知道能不能請板友們分享交流一下
看到底應該是1還是4


The activity of animals is usually coordinated with periodically recurring
events in the environment.


Answer Choices

1。Most animals survive and reproduce successfully without coordinating their
activities to external environmental rhythms.
2。 The circadian period of an animal's internal clock is genetically
determined and basically unchangeable.
3。Environmental cues such as a change in temperature are enough to reset an
animal's clock.
4。Animals have internal clocks that influence their activities even when
environmental cues are absent.
5。Animals are less affected by large differences between their internal
rhythms and the local solar day than are humans
6。Because an animal's internal clock does not operate on a 24-hour cycle,
environmental stimuli are needed to keep the biological day aligned with the
solar day.


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