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問題的種類

英文 高中

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anes and PB16. B 17 (18) with 二、綜合測驗(30%) People are often curious about how different animals sleep. How can birds like Alpine swifts, for instance, keep _(16)____ while they're asleep? How can some underwater creatures such as goldfish sleep without ever _(17)__ their eyes? Why don't cute sea otters float away when they sleep on their backs in the water? How do dolphins manage to keep at least ____(18)____ their brain awake at all times? How can large bears hibernate for months on end ____(19)___the wild? And how can giraffes sleep only _(20)___? All these different ways (21)____ sleeping seem incredible to humans. That's why many people enjoy studying the (22)___ habits of certain animal sleepers. They watch closely to see how these animals behave ____(23)____ their sleep. They like to compare their sleeping positions with their own. Such observations help scientists ___(24)__animal sleeping behavior better and find out which creatures sleep more or less than we humans do. Lastly, observing animal sleep also reveals other secrets. Some humans, _(25)___, might wonder how animals manage to stay safe while sleeping. After all, in the animal world, there's always the danger of taking a nap and being eaten! (A) to fly (B) fly (A) close (B) closing (A) halves (B) halves of (A) in (B) on 20. (A) a day thirty minutes C(C) thirty minutes a day ich is C C 19. B en hè 21. (A) to 22. (A) amazed D 23. (A) until ate 24. (A) understood A D 25. (A) for example (B) on (B) amazing (B) for (B) understanding (B) on the contrary (D) flying (D) closed (D) one half (C) flies (C) closes (C) one half of (C) at (D) to (B) a minute thirty days (D) thirty days a minute (C) for (C) amazingly (C) when (C) understand (C) as a result (D) of (D) amaze (D) during (D) to understanding (D) for a start

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