When we look at a picture of Earth from space，there are areas of green，blue，and white.Most people will recognize（辨認） that the green is land，the blue is water，and the white is clouds.Taken as a whole，Earth is mainly blue.That is because of the amount（數(shù)量） of water it has that covers the surface.
So，how much of Earth is water？About 71% of Earth's surface is covered in water.Of that 71%，the oceans hold 96.5% of the water.This water found in oceans is all salt water.The remaining 3.5% of the water is fresh water，which can be found in lakes，rivers，glaciers（冰川），and in the ground.Fresh water is what people use for farming，raising animals，drinking，and daily activities such as taking showers and washing clothes or dishes.
Does the amount of water stay the same？For the most part，yes.Water on Earth is part of a closed system （系統(tǒng)）.That is，water is always moving and changing forms between ice，liquid，and gas.The form of the water changes all the time，but the total amount of water on Earth remains the same.
If Earth is not necessarily running out of water，why are people worried？Why do we need to think about saving water？First，humans can only use fresh water，which is only 3.5% of all of Earth's water.Second，of this 3.5%，only 1% is available for human use.Most fresh water is found in glaciers far from where anyone lives.Third，the amount of water that is useful for humans is being used faster than it can be cleaned and put back into the environment.
Now，knowing the facts about water，it is our job to make sure we use Earth's water in a good way.
（1）The remaining 3.5% of the water on Earth CAN'T be found in AA.
A．oceans.
B．lakes.
C．glaciers.
D．rivers.
（2）What does the writer mean by saying "Water on Earth is part of a closed system."？ BB
A．The amount of water becomes smaller.
B．The amount of water stays the same.
C．The amount of water keeps changing.
D．The amount of water becomes larger.
（3）What can we learn from Paragraph 4？ CC
A．Humans can use all the water on Earth.
B．Most fresh water is found in the ground.
C．Humans can't use 2.5% of the fresh water easily.
D．Water can't be cleaned and put back into the environment.
（4）What is the main idea of the passage？ CC
A．Why Earth is in different colors.
B．Who uses the most water on Earth.
C．The amount and types of Earth's water.
D．How to use water in a good way.
【考點】說明文；環(huán)境保護．
【答案】A；B；C；C
【解答】
【點評】
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發(fā)布：2024/4/20 14:35:0組卷：23引用：6難度：0.5
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1．
Here are five ways for teens to improve their ability to balance their emotions（情緒）.A.It also helps create a sense of achievement.
B.That can be true even if the strong feelings are good ones.
C.It is harder to deal with strong emotional challenges.
D.Only less than nine percent of teens get enough sleep.
E.Artistic expression is a powerful way for teens to manage emotions.
F.Then they can try taking a few moments each day to practise this method of calming down.
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3．The 2022 Hangzhou Asian Games has been put off and will be held from September 23 to October 8，2023.It will be a good chance for Chinese to watch some games during the National Day holiday.If you'd like to watch games in Hangzhou，here are some rules for you.
閱讀以上材料，根據(jù)其內(nèi)容回答其后各個小題。
ArcherySit at the back or on either side of the field.
Keep quiet during the match.Turn off your cellphone or keep it silent.
Do not use the flash on your camera or your phone.
When the athletes are trying to shoot the target（射擊靶子），keep your voice down.
BasketballYou cannot bring drinks in glass bottles.
Keep the cheers down at important moments.Do not use the camera flash.
If you easily get nervous，bring some snacks.Keep your mouth moving to calm you down.
▲Audience（觀眾）should keep off the track（跑道）.Control your pets.
Athletes might look tired and thirsty，but do not hand them water or anything else.
If an athlete falls，do not touch or help him.
（1）When will the 2022 Hangzhou Asian Games begin？
A．On September 8，2023.
B．On September 23，2023.
C．On October 8，2023.
D．On October 23，2023.
（2）What does the underlined word"flash"mean in Chinese？
A．閃光燈
B．外殼
C．屏幕
D．鏡片
（3）What would be the most suitable to replace ▲in the picture？
A．Football.
B．Running.
C．Roller skating.
D．Cycling.
（4）Which of the following is TRUE according to the passage？
A．You can use the camera flash during the basketball game.
B．You should hand the athletes water when they feel thirsty.
C．You shouldn't shout loudly when watching the archery game.
D．You can't eat anything when you're watching the basketball game.
（5）What is the passage mainly about？
A．Some most popular games.
B．Introduction to some games.
C．The best time to watch games.
D．Rules for watching some games.發(fā)布：2024/12/27 18:30:2組卷：11引用：4難度：0.5
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