Some people are afraid that ______ air pollut...

Some people are afraid that ______ air pollution may cause changes in weather around the world.

A. a    B. 不填    C. an    D. the

九年级英语单项填空简单题查看答案及解析

To make the air clean，Beijing will close some companies________cause heavy pollution．

A．that

B．who

C．what

九年级英语单项填空中等难度题查看答案及解析

Some drivers drive _____fast that they make people ______ are trying to cross the road afraid.

A. too, who　　　 B. even, that　　　　 C. so, who　　　　 D. such, that

九年级英语单项填空简单题查看答案及解析

词汇应用。(本题共10小题，每小题0.5分，共5分)

1.People may feel sick after ___________ (呼吸)polluted air.

2.Couldn’t you give me a few________ (建议)on how to protect ourselves when there is danger?

3.The young man with glasses teaches ________ (我们) Chinese.

4.We will do a lot of activities to celebrate the ____(sixty) birthday of grandpa this year.

5.It is said that an old lady was found ______ (die) three days later.

6.Thanks for your _________ (invite). I will be there on time.

7.We must learn to look after o______ when we are alone at home.

8.The traffic during the rush hour is much b______ than usual.

9.He g_______ gets up early in the morning.

10.When in Rome, do as the R_________ do.

九年级英语单词拼写中等难度题查看答案及解析

Maybe most people know that there is water pollution, air pollution and noise pollution around us, but few people know that there is another kind of pollution—light pollution. In fact, it can be everywhere, depending on the time of the day.

Light pollution is the result of the wasted energy. Instead of providing light for people on the earth, most bright light shines into the sky, because people don’t design lights very well. At the same time, lights are brighter than necessary. All these cause light pollution. Stars in the night sky always provide everyone with wonderful sights(景色), but light pollution prevents them from being seen.

Some scientists say that light pollution can also bring some health problems to people, especially to kids. So it’s the high time for us to do something useful to stop light pollution.

根据短文内容，判断下列句子的正(T)误(F)。

1.Light pollution isn’t serious enough for us to stop it now.

2.All the people know light pollution well today.

3.Most light shines into the sky instead of providing light for people.

4.People in big cities can’t see stars clearly in the night sky.

5.Light pollution doesn’t do harm to people’s health.

九年级英语阅读理解简单题查看答案及解析

Air travel makes some people very nervous. The crowds, the noise and flying itself can cause unease（不安）. But there are classes people can take to help them overcome the fear of flying. And there is similar training for service dogs that suffer the same problem.

Service dogs almost never leave the side of the people they care for. You will see them working on buses, trains and other public systems. But the busy environment found at an airport can cause dogs ants in their pants even the best trained working ones. People with disabilities depend on their dogs. They want the animals to safely guide them through safety areas. They also need the dogs to remain calm on duty on the airplane, even when the flying is not smooth. This takes special training.

The Air Hollywood K9 Flight School is one place where such help can be found. The school has a piece of equipment（设备） that provides the sights, sounds and even the feel of an airplane in flight. Dog trainers say training is based on a simple rule: preparation. Dogs need to be trained gradually to the environment, to loud noises, to sounds and other dogs so that when this experience happens to them on a daily basis, they're able to act in a way that they're used to acting and that they don't get excitable. Dog owners who attended the training at Air Hollywood K9 Flight School say they now feel much more at ease about future flights . Their dogs also seem ready for take—off.

根据短文内容选择最佳答案。

1.The underlined word “ants in their pants” most probably means________.

A.坐立不安 B.蚂蚁跑进裤子 C.环境恶劣

2.From the first paragraph we can learn________.

A.traveling by plane will make people nervous.

B.the problems from the air travel can be solved by taking classes or being trained .

C.The crowds, the noise and flying itself can cause people and animals worrying.

3.Disabilities need their dogs ________ .

A.to leave the side of them no matter on buses, trains and other public systems.

B.to guide them safely through safety areas.

C.to remain calm on duty on the airplane, if the flying is not smooth.

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

A.The Air Hollywood K9 Flight School is one place where you can get training on planes .

B.Dogs will be trained quickly to suit the environment, the loud noises, the sounds on the plane to accompany their owners normally.

C.Some of the dogs have been trained well. They’re ready to look after their owners on planes.

5.What is the passage mainly about?

A.The Air Hollywood K9 Flight School can train animals and people to be used to the bad environment on plane.

B.How, why and where are service dogs trained to help their owners better .

C.Disabilities need their dogs so much that they must send their dogs to school to train

九年级英语阅读单选简单题查看答案及解析

Some scientists say that animals in the ocean are

increasingly threatened(威胁) by noise pollution caused by

human beings. The noise that influences sea animals comes

from a number of human activities. It is caused mainly by

industrial underwater explosions(爆炸) , ocean drilling, and

ship engines. Such noises are added to natural sounds.

These sounds include the breaking of ice fields, underwater

earthquakes, and sounds made by animals themselves.

Decibels (分贝) measured in water are different from those measured on land. A noise of one hundred and twenty decibels on land causes pain to human ears. In water, a decibel level of one hundred and ninety five would have the same effect（效果）.

Some scientists have proposed setting a noise limit （限度）of one hundred and twenty decibels in oceans. They have observed that noises at that level can frighten and confuse whales（鲸鱼）.

A team of American and Canadian scientists discovered that louder noises can seriously injure some animals. The research team found that powerful underwater explosions were causing whales in the area to lose their hearing. This seriously affected the whales' ability to exchange information and find their way. Some of the whales even died. The explosions had caused their ears to bleed.

Many researchers whose work depends on ocean sounds object to a limit of one hundred and twenty decibels. They say such a limit would mean an end to important industrial and scientific research. Scientists do not know how much and what kinds of noises are harmful to ocean animals. However, many scientists suspect that noise is a greater danger than they believed. It’s time for them to take action to help ocean animals.

1.Which of the following is not caused by human beings?

A. The noise of industrial underwater explosions.

B. The noise of ocean drilling.

C. The sound of underwater earthquakes

D. The noise of ship engines.

2.What does the second paragraph mainly tell us?

A. The same noise measures differently on land and in the ocean.

B. Different places may have different types of noises.

C. The noises can cause humans to lose hearing.

D. There are different kinds of natural sounds in the ocean.

3.Which of the following statements is TRUE?

A. Powerful underwater explosions aren’t harmful to whales’ ears.

B. Many researchers are against the noise limit of 120 decibels.

C. Noises cannot cause whales’ death.

D. The noise limit of 120 decibels would hardly influence the industrial research.

4.According to the passage, we can infer that scientists will probably 　　　　　　　 .

A. work hard to cut down natural sounds.

B. stop industrial and scientific research in oceans.

C. try their best to make no noise.

D. protect ocean animals from harmful noises.

九年级英语阅读单选中等难度题查看答案及解析

---I think ______ people drive， ______ air pollution there will be.

---That’s true. I hope the air will be fresher soon.

A.the less， the less　 B. the less， the fewer

C. the fewer， the fewer　 D. the fewer， the less

九年级英语单项填空简单题查看答案及解析

---I think ______ people drive, ______ air pollution there will be.

---That’s true. I hope the air will be fresher soon.

A.the less, the less　　 B. the less, the fewer

C. the fewer, the fewer　 D. the fewer, the less

九年级英语单项填空中等难度题查看答案及解析

---I think ______ people drive, ______ air pollution there will be.

---That’s true. I hope the air will be fresher soon.

A. the less, the less　　 B. the less, the fewer

C. the fewer, the fewer　　 D. the fewer, the less

九年级英语单选题简单题查看答案及解析