阅读下面的短文,从短文后所给的六个选项中选出五个可以填入空白处的最佳选项。
C
Do you know the reason why we feel tired in the middle of a class? Maybe you would say it is because the teacher's class is boring. (9)______ Perhaps this is something you have not paid enough attention to or not yet noticed.
Purposes of sleep
(10)______ Sleep helps our body heal, grow, and stay healthy. It also gives us energy, so we can be active all day. Doctors and health scientists say, "When you close your eyes and need to rest, sleep is just the very best! This is more than advice."
Sleep time
Enough sleep is important to us. How much sleep do we need? Newborn babies sleep most of the time. They can sleep 20-22 hours a day. Children need 10-12 hours of sleep a day. Teenagers need 8-10 hours of sleep a day because they need lots of energy to grow into their adult bodies. Grown-ups usually need 6-8 hours of sleep to keep active. (11)______ That is why old people sleep less than young people.
Interesting facts
Almost everyone has their dreams while they sleep, but not all of them can tell their dreams clearly when they wake up. (12)______ More surprisingly, some may even get up in their dreams and walk around. This is called "sleepwalking". Are you a sleepwalker? Or, is there a sleepwalker around you?
Sleepy animals
(13)______ In fact, many animals have unusual or surprising sleeping habits. Some animals, such as bears and hedgehogs, sleep all through winter. The swift is a very fast bird that can sleep while it flies! Cute koalas sleep around 18 hours a day. Giraffes don't need much sleep at all. They usually sleep standing up.
A. It's not just people that love to snooze(打盹).
B. Why do we need sleep?
C. Some people talk in their dreams.
D. However, the real reason is probably that we don't have enough sleep.
E. The older you get, the less sleep you will need.
F. Some people never dream while they sleep.
C
Do you know the reason why we feel tired in the middle of a class? Maybe you would say it is because the teacher's class is boring. (9)______ Perhaps this is something you have not paid enough attention to or not yet noticed.
Purposes of sleep
(10)______ Sleep helps our body heal, grow, and stay healthy. It also gives us energy, so we can be active all day. Doctors and health scientists say, "When you close your eyes and need to rest, sleep is just the very best! This is more than advice."
Sleep time
Enough sleep is important to us. How much sleep do we need? Newborn babies sleep most of the time. They can sleep 20-22 hours a day. Children need 10-12 hours of sleep a day. Teenagers need 8-10 hours of sleep a day because they need lots of energy to grow into their adult bodies. Grown-ups usually need 6-8 hours of sleep to keep active. (11)______ That is why old people sleep less than young people.
Interesting facts
Almost everyone has their dreams while they sleep, but not all of them can tell their dreams clearly when they wake up. (12)______ More surprisingly, some may even get up in their dreams and walk around. This is called "sleepwalking". Are you a sleepwalker? Or, is there a sleepwalker around you?
Sleepy animals
(13)______ In fact, many animals have unusual or surprising sleeping habits. Some animals, such as bears and hedgehogs, sleep all through winter. The swift is a very fast bird that can sleep while it flies! Cute koalas sleep around 18 hours a day. Giraffes don't need much sleep at all. They usually sleep standing up.
A. It's not just people that love to snooze(打盹).
B. Why do we need sleep?
C. Some people talk in their dreams.
D. However, the real reason is probably that we don't have enough sleep.
E. The older you get, the less sleep you will need.
F. Some people never dream while they sleep.
答案：9. D
10. B
11. E
12. C
13. A
10. B
11. E
12. C
13. A
解析：
翻译:
阅读下面的短文，从短文后所给的六个选项中选出五个可以填入空白处的最佳选项。
C
你知道我们在课堂中间会感到疲倦的原因吗？也许你会说这是因为老师的课很无聊。（9）______ 也许这是你没有足够关注或尚未注意到的事情。
睡眠的作用
（10）______ 睡眠有助于我们的身体康复、生长并保持健康。它还能给我们提供能量，这样我们一整天都能充满活力。医生和健康科学家说：“当你闭上眼睛需要休息时，睡眠就是最好的选择！这不仅仅是建议。”
睡眠时间
充足的睡眠对我们很重要。我们需要多少睡眠呢？新生婴儿大部分时间都在睡觉。他们一天可以睡20 - 22个小时。儿童一天需要10 - 12个小时的睡眠。青少年一天需要8 - 10个小时的睡眠，因为他们需要大量的能量来长成成年的身体。成年人通常需要6 - 8个小时的睡眠来保持活力。（11）______ 这就是为什么老年人比年轻人睡得少。
有趣的事实
几乎每个人在睡觉的时候都会做梦，但不是所有人醒来后都能清楚地说出自己的梦。（12）______ 更令人惊讶的是，有些人甚至可能在梦中起床并四处走动。这被称为“梦游”。你是梦游者吗？或者，你身边有梦游者吗？
爱睡觉的动物
（13）______ 事实上，许多动物都有不寻常或令人惊讶的睡眠习惯。有些动物，比如熊和刺猬，整个冬天都在睡觉。雨燕是一种飞得很快的鸟，它甚至可以在飞行时睡觉！可爱的考拉一天大约睡18个小时。长颈鹿根本不需要太多睡眠。它们通常站着睡觉。
A. 不只是人类喜欢打盹。
B. 我们为什么需要睡眠？
C. 有些人会在梦中说话。
D. 然而，真正的原因可能是我们睡眠不足。
E. 你年龄越大，需要的睡眠就越少。
F. 有些人睡觉的时候从不做梦。
阅读下面的短文，从短文后所给的六个选项中选出五个可以填入空白处的最佳选项。
C
你知道我们在课堂中间会感到疲倦的原因吗？也许你会说这是因为老师的课很无聊。（9）______ 也许这是你没有足够关注或尚未注意到的事情。
睡眠的作用
（10）______ 睡眠有助于我们的身体康复、生长并保持健康。它还能给我们提供能量，这样我们一整天都能充满活力。医生和健康科学家说：“当你闭上眼睛需要休息时，睡眠就是最好的选择！这不仅仅是建议。”
睡眠时间
充足的睡眠对我们很重要。我们需要多少睡眠呢？新生婴儿大部分时间都在睡觉。他们一天可以睡20 - 22个小时。儿童一天需要10 - 12个小时的睡眠。青少年一天需要8 - 10个小时的睡眠，因为他们需要大量的能量来长成成年的身体。成年人通常需要6 - 8个小时的睡眠来保持活力。（11）______ 这就是为什么老年人比年轻人睡得少。
有趣的事实
几乎每个人在睡觉的时候都会做梦，但不是所有人醒来后都能清楚地说出自己的梦。（12）______ 更令人惊讶的是，有些人甚至可能在梦中起床并四处走动。这被称为“梦游”。你是梦游者吗？或者，你身边有梦游者吗？
爱睡觉的动物
（13）______ 事实上，许多动物都有不寻常或令人惊讶的睡眠习惯。有些动物，比如熊和刺猬，整个冬天都在睡觉。雨燕是一种飞得很快的鸟，它甚至可以在飞行时睡觉！可爱的考拉一天大约睡18个小时。长颈鹿根本不需要太多睡眠。它们通常站着睡觉。
A. 不只是人类喜欢打盹。
B. 我们为什么需要睡眠？
C. 有些人会在梦中说话。
D. 然而，真正的原因可能是我们睡眠不足。
E. 你年龄越大，需要的睡眠就越少。
F. 有些人睡觉的时候从不做梦。