Seventy percent of our planet is covered by o...

Seventy percent of our planet is covered by one huge body of seawater-the ocean. In 2008, the United Nations recognized(确立) June 8 as World Oceans Day. It's a day to think about the important role that the oceans play in our lives, the dangers that our oceans are facing and the action we can take to protect them.

The ocean is home to the most of plants and animals on Earth. Plants in the sea provide us with 70 percent of O2 we breathe. The ocean controls our climate (气候), providing heat in winter and cool air in summer. It also provides us with food and medicine. No matter where you live on the planet, no matter how far from the sea, your life is dependent on the ocean.

The biggest problem facing the ocean at the moment is plastic pollution. Reducing single-use plastic, including plastic bags and plastic bottles, has been an important theme for World Oceans Day for a number of years.

Climate change and rising sea temperatures are also a huge problem. Rising sea temperatures have a direct influence on weather patterns and are seen as partly responsible for an increase in extreme (极端的) weather.

The day is celebrated in all kinds of ways, including special events on the beach, river clean-ups, school activities, art contests and film festivals. You can join in to remind people about the importance of our oceans and to make a difference.

1.What percent of our planet is covered with seawater?

A.30% B.40% C.70%

2.What is the main idea of Paragraph 2?

A.The ocean provides us with heat and cool air.

B.Our life is dependent on the ocean.

C.The ocean provides us with food and medicine

3.What is the biggest problem facing the ocean?

A.Plastic pollution. B.Reducing single-use plastic. C.Air pollution.

4.What is partly responsible for an increase of extreme weather?

A.Climate change. B.Rising sea temperatures. C.Weather patterns.

5.How do people celebrate World Oceans Day?

A.Eating out together. B.Having a meeting. C.Holding special events.

九年级英语阅读单选中等难度题查看答案及解析

About seventy percent of our earth _______ by water.

A. is covering　　 B. is covered

C. are covered　　 D. are covering

九年级英语单选题简单题查看答案及解析

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

More than seventy percent of the earth ________ covered with water.

A.is B.are C.was D.were

九年级英语单选题中等难度题查看答案及解析

Last month we asked our students about their free time activities. Our questions were about exercise, use of the Internet and watching TV. 1.

We found that only fifteen percent of our students exercise every day. Forty-five percent exercise four to six times a week. Twenty percent exercise only one to three times a week. 2.

We all know that many students ofen go online, but we were surprised that ninety percent of them use the Internet every day. The other ten percent use it at least three or four times a week Most students use it for fun and not for homework.

3.Only two percent of the students watch TV one to three times a week. Thirteen percent watch TV four to six times a week. And eighty-five percent watch TV every day! Although many students like to watch sports, game shows are the most popular.

It is good to relax by using the Internet or watching game shows, 4.It is healthy for the mind and the body. Exercise such as playing sports is fun, and you can spend time with your friends and family as you play together. And remember, “Old habits die hard." 5.

A.So start exercising before it's too late!

B.Many students like playing online games.

C.And twenty percent do not exercise at all.

D.but we think the best way to relax is through exercise.

E.Here are the results.

F.The answers to our questions about watching television were also interesting.

九年级英语补全短文6选5简单题查看答案及解析

From video games and museums to medical training, VR（virtual reality, 虚拟现实）has been changing our lives for the better. However, this wonderful new technology has a so-far unsolvable problem: It may make people feel sick from the VR experience. The feeling of sickness, caused by VR, is called cybersickness.

"With modern VR systems, the possibility of cybersickness after only 15 minutes' experience is from 40 to 70 percent," Thomas Stoffiregen, a researcher at the University of Minnesota, US said. This sickness is probably caused by sensory conflict （感觉冲突），explained Stoffregen. When you are wearing a VR headset, your body's motion sensors cannot match the information received by your eyes. For example, when we wear a VR headset and ride a virtual roller-coaster, we think we are going up and down, but our bodies stay still. It leads to the loss of balance. Sickness is from our bodies' natural reaction to the experience. Adding to this problem, women are more likely to feel sick from the VR experience than men.

According to a study by Bas Rokers, a scientist at the University of Wiscons in-Madison, US, one reason could be the headsets. To work properly, VR headsets must match up with your PD （pupil distance, 瞳距）. Since they are designed larger PD, not everyone gets the best experience. Rokers found the larger PD distance is, the greater discomfort will cause. Based on his studies, about 90 percent of women have a shorter PD than the headset is made and that's the reason why women are more likely to have cybersickness.

Cybersickness prevents the widespread use of VR technology. Once it becomes comfortable and easy to use, however, it could play a great role in our lives.

1.Which is Right about cybersickness?

A.It's a common problem with VR technology. B.It is caused by one's poor sense of direction.

C.It's more possible for young people to feel sick. D.It only happens to women and children.

2.The example of riding a virtual roller-coaster is used to _________.

A.tell what it is like to have cybersickness B.explain how cybersickness is caused

C.tell people how to avoid cybersickness D.show how cybersickness influences people

3.Why are women more likely to have cybersickness?

A.They have a poor sense of direction. B.VR headsets are only made for men.

C.VR headsets are too large for their PDs. D.They are easy to lose balance.

4.What does the writer think of the VR technology?

A.The VR technology has already played a great role in our lives.

B.There is still something to do before VR technology plays a great role.

C.The VR technology is comfortable and easy to use for everyone.

D.It's impossible for VR technology to be popular in the future.

九年级英语阅读单选困难题查看答案及解析

Our Earth is a blue planet. About 71 percent of the planet is water, but people can only use a small amount of it. Only about 3 percent of the world's water is fresh water. It's in lakes, rivers and underground. According to the UN, wastewater problems make water shortages (短缺) even more serious. Our homes, cities and factories make wastewater every day. It pollutes rivers and lakes.

People from different countries have their own tips for saving water.

In Australia most people have a grass lawn (草坪) around their home. They wash their cars on the lawn. The water will go to the grass!

People in Germany collect rainwater to save water. Most new houses have a rainwater collection device (设备). The device collects rainwater from the roof (屋顶), and then sends it to the toilet. If you don't have the device, just put a bucket (桶) under your roof.

1.Only 3 percent of the world's water is ________.

A.seawater B.fresh water C.rainwater D.wastewater

2.Fresh water is in _______

A.lakes B.rivers C.underground D.A, B and C

3.The underlined word it refers to (指的是) ________.

A.the factory B.our home C.the city D.wastewater

4.The underlined word tips probably means ________.

A.notes B.rules C.ways D.problems

5.Why do people in Germany collect rainwater with the device? They want to ________.

A.clean the toilet B.drink it C.wash their cars D.sell it

6.According to the passage, which of the following is NOT TRUE?

A.People can find fresh water in lakes, rivers and underground.

B.Nobody wants to wash their cars on the lawns to save water in Australia.

C.Most new houses in Germany have a rainwater collection device.

D.People can also use a bucket to collect rainwater under the roof in Germany.

九年级英语阅读单选简单题查看答案及解析

In our city, one third of the area________covered with green trees, but only forty percent of them ________ well looked after.

A.is; have B.is; are C.has; are

九年级英语单选题中等难度题查看答案及解析

The human brain is very small and light only two percent of our total body weight, but it needs about 20% of the oxygen(氧气) that our body takes in. We can't think well if our brain isn't getting enough oxygen, so always make sure there is enough oxygen in the air when you need to learn or remember something. No one can remember everything. but everyone can learn how to improve their memory. Here are some suggestions ---none of them can make your memory 100% perfect, but all of them are helpful.

When you want to remember something, tell a friend about it. This way the new information becomes more memorable. Later on, think about the conversation with your friend. It will remind you of the information you wanted to remember.　　

Don't over-train your brain. When you've remembered a list of new words, stop studying. It's better to study a lot of material for a small amount of time than a small amount of material for a lot of time! But remember you do have to practice your new words regularly!

Our memory works well when we are asleep. If you want to remember something, go to bed and go to sleep right now after learning it.　

If you have to remember something big, divide it into small parts. It's easier to remember 198756430387 if you divide it into four smaller bits:198-756-430-387.

If you want to remember a piece of information, and you can't, don't get angry. Relax and tell yourself, "If it's important, I will remember it later.”

One of the best ways of remembering is to make pictures on the movie-screen of your mind and it's fun, too! Scientists say that our brain works a lot in pictures. So sometimes, if we want to remember new information, it helps to make a picture story. Anyone can learn to do this.

1.If you Weigh fifty kilograms, how heavy is your brain?

A.About ten kilograms.

B.About two kilograms.

C.About one kilogram.

2.How many helpful suggestions are mentioned in the passage?

A.Five. B.Six. C.Seven.

3.What should someone do after he has remembered a list of new words?

A.He should rest, then practice them regularly.

B.He should tell himself about what he has done.

C.He should continue to remember more new words.

4.Which of the following is TRUE according to the passage?

A.It's useless to remember something before going to sleep.

B.It's easier to remember something by dividing it into small parts.

C.It's harder to remember something by changing words into pictures.

5.What's the best title of this passage?

A.An introduction to our brain.

B.Some good ways of learning.

C.Advice on improving our memory.

九年级英语阅读单选简单题查看答案及解析

Thirteen years ago, the Planet Earth wildlife documentary took us all on an amazing journey. We went from deep rainforests to the bottom of the ocean. Now a new one ,Our Planet, will let us see different animals and the influence of humans on the natural world. The documentary covers 50 countries and areas. It took more than four years to produce it.

With the latest 4K video technology, the show allows people a wonderful new look at nature. “People are given a chance to better get themselves into the lives of the animals” said Fothergill, one of the show's producers.

Besides showing Earth's beauty, the documentary also talks about the planet's climate conditions. "Our Planet is here to say,' The planet is dying, and we're killing it.’" Fothergill said. In one sad scene, hundreds of walruses(海象)，half-blind when out of the water, fall down a rock and suffer a painful death on the beach below. It shows how the climate conditions have influenced their natural habitat and explains why they've been forced to find the safe place on the rocks.

But the documentary is not all about sadness. It also talks about success stories, such as the ones of tigers. These animals are saved and live happily thanks to international agreements on environmental protection.　　

Asking more people to take action in protecting our planet is the final goal of the new documentary. What we do in the next 20 years will decide the future of all life on Earth.

1.What's the documentary Our Planet about?

A.The relationship between the climate conditions human activities.

B.Different animals and the influence of humans on the natural world.

C.The living conditions of walruses and tigers.

D.The beauty and customs of 50 countries and areas.

2.What's the purpose of the last paragraph?

A.To explain what our goal is in the future.

B.To call for more people to protect our planet.

C.To tell us how the climate conditions influence animals.

D.To introduce international agreements on environmental protection.

3.What can we infer from the passage?

A.It took a lot of time and efforts to make the documentary.

B.The documentary is popular in many countries and areas.

C.We should have a new look at the environmental protection.

D.Our goal in the future is getting along well with animals.

4.Where is the text probably from?

A.A novel B.A dictionary C.A storybook D.A newspaper.

九年级英语阅读单选中等难度题查看答案及解析