We all know that the earth is not the c________ of the universe(宇宙).
九年级英语单词拼写中等难度题
We all know that the earth is not the c________ of the universe(宇宙).
九年级英语单词拼写中等难度题查看答案及解析
We all know that 70% of the earth is water.But only 1% of it is clean water.People can't live without water.So it's important for everyone to save water.Here are some tips for saving water.
Indoors:
●Turn the tap off while you are brushing your teeth,washing your hands,doing dishes,taking a shower and so on.
●Catch the cold water that comes out of the tap or shower while you are waiting for the hot water.Use it to water plants or wash your toilet.
●Don't wash clothes too often.When you use the washing machine,make sure there is not only a pair of pants in it.
Outdoors:
●Water the garden and grass at night.This gives water more time to get into the earth without evaporation from the day's heat.
●Plant small trees under big trees.This will help stop evaporation and gives some shade(树阴) for your plants.You can also plant a shade garden under trees.
1.It's important for everyone to save water because .
A. 70% of the earth is water B. the water on the earth is clean
C. only a small part of the water is clean D. we need it to water plants
2.What does the underlined word "evaporation" mean in Chinese?
A. 流失 B. 蒸发 C. 渗透 D. 锁住
3.The following ways can save water according to the passage except .
A. planting a shade garden under trees
B. watering the garden and grass during the night time
C. catching the cold water when you wait for the hot water to shower
D. using the washing machine as you like,no matter how many dirty clothes there are.
九年级英语阅读理解中等难度题查看答案及解析
We all know that the gravity on Mars is only about _________ of __________ on Earth.
A. three-eighths; the one B. three-eighth; the one
C. three-eighths; that D. three-eighth; that
九年级英语单选题中等难度题查看答案及解析
We all know that smoking is bad for people’s health. But not many people know about the danger of secondhand smoke.
Secondhand smoke is the smoke that comes from the smoker’s breath(呼吸). If people breathe in secondhand smoke from time to time, they could get sick from it.
But how serious is the problem of the secondhand smoke? The World Health Organization(WHO) did a study of 194 countries. They found that secondhand smoke causes about 600,000 deaths every year. That is about 1% of the world’s deaths.
Secondhand smoke is especially bad for children because their bodies are still growing. According to the study, around 165,000 children under the age of 5 die each year because of secondhand smoke. Most of these deaths happen in Africa and southern Asia.
You can do something to keep yourself and other people away from secondhand smoke. You can ask the smokers, such as your parents, to smoke outside. And, if someone smokes close to you, you’d better hold your breath or just walk away.
1.Children can easily get sick from secondhand smoke because __________.
A. they are from Africa B. their bodies are still growing
C. secondhand smoke is very dangerous D. they are all under the age of 5
2.According to the study, children who die from secondhand smoke most come from_____.
A. Africa and Australia B. Africa and eastern Asia
C. southern Asia and Africa D. southern Africa and India
3.You can’t keep yourself away from the secondhand smoke by __________.
A. asking the smokers to smoke outside B. walking away
C. holding your breath D. smoking with them
4.The best title of this article may be __________.
A. Smoking B. Secondhand Smoke
C. Giving up Smoking D. Children Are Dying
九年级英语阅读理解中等难度题查看答案及解析
任务型阅读 根据短文内容,回答下列问题。
Is there life on Mars? We don’t know.We’re sure that people on the earth are not able to live on Mars.People on the earth need oxygen to breathe in.There is almost no oxygen on Mars.
Living on Mars would be like living on a very high mountain.There would be little air.The temperature might be 50 degree above zero at noon and 140 degrees below zero at night.Many people think there may be plants on Mars.We know that on Mars there is carbon.This is a kind of material found in all plants and animals on the earth.Mars looks red through a telescope(望远镜).It seems gray in some places.At times the gray color turn gray-green,then brown,then gray again.The gray-green color may be a kind of plant changing color with the seasons.
Will men go to Mars one day? If they do,they must take their own oxygen,food and clothing with them.
根据表格内容,完成下面各题。
1.Can people live on Mars?
2.Is there any oxygen on Mars?
3.What kind of material can be found in all plants and animals on the earth?
4.Does Mars look gray through a telescope?
5.What must men take if they go to Mars?
九年级英语其他题中等难度题查看答案及解析
As we all know, __________ of the earth surface is covered by water.
A. Three fours B. Three fourths
C. Third fours D. Third quarters
九年级英语单项填空中等难度题查看答案及解析
We know that about seventy percent _____ the earth _____ covered by water.
A. /; is B. of; are
C. of; is D. about; are
九年级英语单项填空简单题查看答案及解析
阅读理解。
In the universe, as we all know, there is the sun, the moon, the earth and a good many stars. Through our geography lessons, we know the earth goes around the sun, and the moon goes around the earth. We have day and night because the earth keeps turning all the time. When our part of the earth turns to the sun, it is day. When our part of the earth turns away from the sun, it is night.
Just because the moon is closer to the earth than the sun, it looks much bigger than the sun. Big things will look smaller when they are further, and small things also look bigger when they are nearer.
The sun is big enough to give out very strong light. The moon can’t give any light at all, but it looks quite bright, too. Why? In fact, the light from the moon comes from the sun. The moon looks much bigger and brighter than the stars. But actually (事实上) the stars are much bigger and brighter than the moon. They look smaller than the moon also because they are further away from the earth.
There are many other planets in the universe. But of all the planets, only on the earth there are living things and people can only live on the earth, too. But at 9:00 a.m. on October 15th,2003, Chinese pilot Yang Liwei was sent up to space. He stayed there for 21 hours. It was the first time for Chinese to get into space.
1.We find the sun is _______ than the moon because it is _______ to us.
A. bigger; farther B. smaller; closer
C. bigger; closer D. smaller; farther
2.When our part of the earth turns away from the sun, the other part of the earth is _______ .
A. night B. day
C. evening D. Sunday
3.People and living things can live on the .
A. earth B. Mars
C. moon D. sun
4.When did the pilot from our country return to the earth? _______
A. On November 15th, 2002. B. On October 16th, 2003.
C. On May 15th, 2004. D. On October 15th, 2003.
5.Which of the following is TRUE according to the passage?________
A. The moon goes around the earth and it can’t give out any light at all.
B. The moon goes around the sun and its light is from the sun.
C. The earth moves around the moon and people can live only on the earth.
D. Of all the planets, only the earth moves around the sun.
九年级英语阅读理解中等难度题查看答案及解析
How much do you know about Earth-the planet that we live on? Our knowledge of Earth has been developing since ancient times. However, many puzzles about Earth remain unsolved. Live Science has published a list of the eight biggest mysteries about Earth. Let's look at some of them.
Where did water come from?
When it first came into being 4.5 billion years ago, Earth was a dry rock. So where did all of our water come from? Scientists think that it might have arrived in the form of ice by an asteroid(小行星) from outer space that hit our planet. But this theory has not been confirmed because there is very little related evidence(相关证据)to be studied.
What's in the core(地核)?
Scientists used to study meteorites(陨石)as small examples of Earth, believing that Earth's core was made of iron and nickel(镍). However, a later study in the 1950s proved this way to be wrong because it found that Earth would be too light to provide gravity if its core contained only iron and nickel. Today, scientists continue to bring forward different theories, but none have been confirmed.
How was the Moon born?
Scientists have found that the chemical compositions(成分)of Earth and the Moon are very similar. That suggests that the Moon actually came from Earth. For example, it could be a piece of Earth that separated when Earth hit another planet. It is also possible that when Earth first came into being, it spun(旋转)very fast and threw off enough molten(熔化的)rock to later from the Moon.
1.What's the story mainly about?
A.How Earth came into being. B.Where Earth's water came from.
C.How the Moon was formed. D.Unexplained mysteries about Earth.
2.What do we know about where water may come from?
A.Earth's water may come from ice that melted 4.5 billion years ago.
B.Earth's water may come from a small planet that hit Earth.
C.We don't know where water came from.
D.There is lots of evidence that tells us where water came from.
3.What does the underlined phrase "bring forward" in Paragraph 5 probably mean?
A.Check. B.Raise. C.Improve. D.Receive.
4.Which of the following is TURE according to the passage?
A.Scientists believed Earth's core was made of meteorites.
B.A study in the 1950s proved that Earth's core is made of iron and nickel.
C.The Moon and Earth are made of similar materials.
D.Three possibilities of where the Moon came from are mentioned.
九年级英语阅读单选中等难度题查看答案及解析
How much do you know about Earth—the planet that we live on? Our knowledge of Earth has been developing since ancient times. However, many puzzles (谜) about Earth remain unsolved. Live Science has published a list of the eight biggest mysteries about Earth. Let’s look at some of them.
Where did water come from?
When it first came into being 4.5 billion years ago, Earth was a dry rock. So where did all of our water come from? Scientists think that it might have arrived in the form of ice by an asteroid (小行星) from outer space that hit our planet. But this idea has not been confirmed (证明) because there is very little related evidence(相关证据) to be studied.
What’s in the core (地核)?
Scientists used to study meteorites (陨石) as small examples of Earth, believing that Earth’s core was made of iron and nickel (镍). However, a later study in the 1950s proved this way to be wrong because it found that Earth would be too light to provide gravity (引力) if its core contained only iron and nickel. Today, scientists continue to bring forward different ideas, but none have been confirmed.
How was the moon born?
Scientists have found that the chemical compositions (成分) of Earth and the Moon are very similar. That suggests that the Moon actually came from Earth. For example, it could be a piece of Earth that separated when Earth hit another planet. It is also possible that when Earth first came into being, it spun (旋转) very fast and threw off enough molten (熔化的) rock to later form the Moon.
1.What’s the main idea of the passage?
A.How Earth came into being.
B.Where Earth’s water came from?
C.How the moon was formed?
D.Unexplained mysteries about Earth.
2.What do we know about where water may come from?
A.Earth’s water may come from ice that melted 4.5 billion years ago.
B.Earth’s water may come from a small planet that hit Earth.
C.We don’t know where water came from.
D.There is lots of evidence that tells us where water came from.
3.What does the underlined phrase “bring forward” in Paragraph 5 probably mean?
A.Check B.Raise
C.Improve D.Receive
4.Which of the following is TRUE according to the passage?
A.Scientists used to believe Earth’s core was made of meteorites.
B.A study in the 1950s proved that Earth’s core is made of iron and nickel.
C.The moon and Earth are made of similar materials.
D.Three possibilities of where the Moon came from are mentioned.
九年级英语阅读单选中等难度题查看答案及解析