学进去-教育应平等而普惠
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类型:阅读单选
难度系数:0.65
所属科目:初中英语

March 21 is World Sleep Day. Here are some facts about sleep.

Sleep at advised times

In 2021, the Ministry of Education(MOE)advised that junior and senior high school students should go to bed before 10 pm and 11 pm respectively(分别的).

How do astronauts sleep

Just like on Earth, a person in space goes to bed at night and then wakes up the next day. But in space there is no up or down, and you do not feel the pull of gravity(重力). As a result, astronauts usually sleep in fixed sleeping bags.

Earworms happen while sleeping

Some people enjoy listening to music a lot. While we’re awake, the music we know well keeps ringing in our ears, which is called earworms(耳虫现象). This can happen during sleep as well, which could cause problems in getting to sleep and staying asleep.

Sleep with your pet

Pets, like dogs and cats, do not sleep continuously and they will often get up and walk on the bed, which can make you sleep even worse.

But recent studies found that having pets in the bed may help people who are often worried. The pets, like soft toys, can help cut down their worry.

Socks can help us sleep

Studies have shown that wearing socks to bed can help you fall asleep faster!

Hands and feet help exchange(交换)heat between the far ends of the body and the heart. Wearing socks means an increase of blood to your hands and feet, which cuts down your core(核心的)body temperature. The lower the core body temperature is, the faster you fall asleep.

1.According to MOE, junior high school students should _________.
A.go to bed before 10 pmB.go to bed before 11 pm
C.sleep at least 10 hours a dayD.sleep at least 11 hours a day
2.Why do astronauts sleep in fixed sleeping bags?
A.Because there is no bed in the space station.B.Because there is no pull of gravity in space.
C.Because sleeping bags are comfortable.D.Because the spaceship is too small.
3.According to the passage, earworms can ________.
A.be bad for sleep qualityB.improve music ability
C.help people fall asleep quicklyD.appear only during the day
4.How does wearing socks help us sleep?
A.By making feet warmer than hands.B.By increasing blood to hands and feet.
C.By making core body temperature higher.D.By exchanging heat between hands and feet.
5.Which of the following statements about sleep is true according to the passage?
A.World Sleep Day falls in the fifth month each year.
B.The sleeping bag is the best choice for sleep.
C.Sleeping with pets helps worried people.
D.Music can help people sleep longer.
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y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2

用户名称
2019-09-19

y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2

用户名称
2019-09-19
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