—Do you know the traffic rules?—Sure, one of ...

—Do you know the traffic rules?

—Sure, one of them is that we can’t go across the street ________ the light is green.

A.when B.until C.after

九年级英语单选题中等难度题查看答案及解析

You Are What You Eat

Genetic (基因的) engineering is the scientific change of the genetic material in a living thing. It allows scientists to identify specific genes, to remove them from a living thing’s chromosomes(染色体), improve them, analyze them, and possibly clone them, and to then reinsert the changed gene into the original living thing, or a completely different living things. Unlike traditional breeding (繁殖), where a desired quality would be bred within the same kind of living things, genetic engineering can insert desired ones into living things of different kinds. Wow ... did you catch that?

Genetic engineering creates many positive contributions to agriculture. For example, by genetically engineered (GE) foods, anti-cancer agents, minerals and vitamins can be increased. Improved taste, shelf life, and better transport are all possible. Also, GE plants can increase pest and bacterial resistance（抵抗力）, therefore, making the food safe for the consumers.

But some argue that the possible negative effects outweigh the positives, and critics are starting to voice their worries. Unlike Europe, in the United States labeling（贴标签）is not required on genetically engineered foods or on foods that contain genetically engineered products. Most Americans do not realize that they are, in fact, eating GE foods.

The public is also concerned about the unknown health risks. With limited understanding of genes, scientists cannot predict possible effects. Because most genes introduced into GE plants come from sources not introduced into the human body, it is impossible to know if they will cause reactions. Moreover, due to the lack of labeling, if allergies（过敏）develop, it will be extremely difficult to find the origin of them.

There is also a major moral question in many minds. For many, the conflict is not if it is safe or not, but it disturbs them because it is unnatural and unnecessary. We are currently producing one and a half times the amount of food needed to feed the world, yet one in seven people are starving. So GE food is unnecessary, and fails to address the root of hunger. Many believe that the only people who will benefit are the corporations that produce it.　

Scientists cannot foresee the possible effects of GE foods, yet we eat them every day without even knowing it. We already have enough food, so why create more that could be potentially harmful to us, to the Earth and to all wildlife? I think that the benefits are amazing, but until we know for sure how these foods will affect us, they are not worth the risk.

1.According to the passage, traditional breeding is different from genetic engineering because________.

A.traditional breeding changes the genes in the same kind of living things

B.traditional breeding takes place within the same kind of living things

C.traditional breeding is more scientific

D.traditional breeding changes the genes in different kinds of living things

2.According to Paragraph 5, GE food is unnecessary because ________.

A.customers will benefit from GE food

B.we’re now producing more food than before

C.it won’t help solve the problem of hunger in the world

D.there are obvious dangers in producing GE food

3.What is the writer’s writing purpose?

A.To introduce genetic engineering’s positive contributions to agriculture.

B.To welcome genetic engineering and GE food.

C.To discuss the differences between GE food and other food.

D.To tell people to keep GE food off before their influence on us is clear.

九年级英语阅读单选困难题查看答案及解析

Americans buy more bottled water than any other nation in the world. 29 billion bottles of water are drunk each year. It takes 17 million barrels of oil to make these bottles. That's enough oil to keep a million cars going for twelve months.

So why don't more people drink water from the tap in the kitchen? Some people drink bottled water because they think it is better for them than water out of the tap, but that's not true. In the United States, the government makes sure water from the tap is safe.

People love bottled water because it is convenient to take with them. But maybe if they understand the problems it makes, they will try drinking from a glass at home or carrying water in a reusable bottle instead of a plastic one. Although plastic water bottles can be turned into some other useful things, only a small number of them are reused. The rest are taken away in rubbish trucks, or even worse, they end up as rubbish on the land and in rivers, lakes, and the ocean. Plastic bottles take hundreds of years to break down.

Water is good for you, so keep drinking it. But think about how often you use plastic water bottles, and see if you can make a change. If you take one to school, don't throw it away — bring it home and put tap water in it for the next day.

1.Americans buy the most bottled water in the world.

2.The United Nations makes sure water out of the tap is safe.

3.Plastic water bottles we use cause serious pollution.

4.It takes a hundred years to make plastic water bottles break down.

5.We should use a plastic water bottle as many as possible before throwing it away.

九年级英语阅读判断简单题查看答案及解析

巨石阵的未解之谜

The stone ring at Stonehenge is a famous sight for tourists in Britain.

One thing we know 1. (exact) about Stonehenge is that it was completed 3500 years ago. Experts think that originally there were 30 stones, 2. only 17 remain standing.

One of the main 3. (fact)that we don't know about Stonehenge is why it was put there. Perhaps it might have been a place for 4. (watch) the stars and planets. And we also don't know how Stonehenge was 5. (build). Some of the stones came from 200 kilometers away and some of them w6. 40 tons. We quite wonder how the workers 7. (manage) to get these huge stones into an upright position at that time，but we think that workers must have used ropes to pull them u8. . But how did the stones get there in the9. (one) place? 10. answer may be told in the future.

九年级英语语法填空中等难度题查看答案及解析

根据下面短文内容，在短文的空格处填上一个恰当的词，使短文完整、通顺。

We all want to live the life we dream of. However, at times, some negative (消极的) ideas may stop us. Hope the following suggestions can help to ignore those1. and go ahead.

Do What We Can Control

One thing we can control is doing what we can—eating healthily, exercising, reading and getting enough sleep. Doing the right things can help2. to achieve the most happiness. Also, it can make us move on in the3.direction. However, we should also accept that there are many things we can't control.

Take Calculated (预料到的) Risks

Success doesn't come4.risks. We all have to take risks in life, but try to make sure those risks are calculated. For example, you are working at a job that you hate, and you are dreaming of giving it up and 5. your own business. The thought is a start. But one day, you can't stand your job any more, so you leave it even though you haven't really had a plan. This is such a big risk that it will probably make you6.want to take a risk again. So just start with a small risk.

Don't Be Afraid of Failure

Thomas Edison is one of the greatest inventors in history. However, he7.many times. Did you know Edison created an electric pen? A ghost machine? Probably not. Well, that's because they were complete failures. But those failures put him one step8.to success. Think of failures as milestones (里程碑) towards success.

九年级英语单词填空困难题查看答案及解析

Driving cars, trucks and motorcycles is an important part of our lives. We do it every day to get to work, to school or to friends’ houses.

Driving can be very convenient, but can also cause many problems. Waiting in line at a red light, a driver may get impatient and decide just to drive right through it. If another car is coming from the other direction, there might be a terrible accident. Cutting another car off can make its driver angry, so that driver cuts off someone else. Pretty soon everybody is angry, and impatient.

Traffic accidents declare millions of lives every year worldwide. In Taiwan alone, over seven people are killed in accidents every day. The annual death rate from traffic accidents in Taiwan is twice that of Japan.

To allow traffic to move smoothly and safely, everybody must follow the rules. Before you drive, learn all the traffic laws. That way of driving is safe, convenient and even fun!

1.If you cut another car off, its driver may be 　　　　　　　 .

A.impatient B.terrible C.angry D.both A and C

2.According to the passage, driving can be safe if 　　　　　　　 .

A.you are patient

B.you obey all the traffic rules

C.you don’t cut another car off

D.you wait in line at a red light

3.Which of the following may be the best title for this passage?

A.Traffic Safety B.A Careful Driver C.How to Drive a Car D.A Traffic Accident

九年级英语阅读单选简单题查看答案及解析

When my brother and I were children, we spent a few weeks each summer in the countryside with our uncle. He was a geologist and loved to go on long walks to find stones to add to his collection at the university. More often than not, we followed him.

One day, we left early and this time, our uncle gave us two backpacks. "You can help me carry the samples, " he explained.

Sure, why not? The whole day, we walked around the countryside, and every now and then,our uncle put stones in our bags.We were a bit surprised that sometimes he also took some stones out from our bags, but thought he had just found better samples.

We reached the house in the late afternoon. The backpacks were so heavy that we were really tired out when we put them on the ground. Yet our uncle's backpack was half-empty.

"Why did you give us so many stones? " we asked. "I didn't. You did, " he said, waiting for a while before continuing. "You did not know it, but made you go through a little attitude test today."

"What do you mean an 'attitude test'?" we wanted to know.

"It is something someone once did to me. You see, I listened to every word you said. And whenever　 you complained about anyone or anything, I added a stone to your bags. And whenever you talked about something in an attitude of positive thinking, I took out a stone. And now look at your backpacks.

We did. They were full. "I hope you remember this little attitude test. You see, your negative thoughts are like stones. You carry them in your mind just like those stones in a backpack. The more negative thoughts you have, the heavier your mind is. So look at those bags and start paying attention to what you say and how you say things."

This little lesson was one of the most important I ever had. And I remember my uncle with great love for teaching us one of the most important lessons in life—the power of attitude.

1.A geologist is a person who _______

A.grows plants B.studies the earth C.sells stones D.draws pictures

2.When the writer and his brother returned home late in the afternoon, _______.

A.they were tired but happy that they had helped their uncle

B.they wished they could collect more sample stones

C.they found that their bags were filled with stones

D.they were angry to find their uncle's bag half-empty

3.How did the uncle explain the attitude test to the writer of the passage?

A.By giving examples of good stones.

B.By asking questions about the stones

C.By using famous sayings about stones.

D.By comparing negative thoughts to stones.

4.According to the passage,what does the writer want to tell us from the passage?

________________________

九年级英语多任务混合问题中等难度题查看答案及解析

“We're going to cut science class today. I know you want to come with us. Let’s go!”

Maybe you’ve ______one of the popular kids at school say something like this. So what do you do? Do you just give in and do what the other kids ______, or do you go to class no matter what they say?

Situations like this often come up. And it is not easy to make your own______ when your friends want to do something you’re not quite sure about. Sometimes, you feel you should do something because everyone else is doing it, and it is______to go against the majority. This is called “peer(同龄人) pressure” because peers are pressuring you to do what they want.

Some people give in to peer pressure because they want to be more popular. Some worry that others will make fun of them ______they don’t go along with the group. The ______that “everyone is doing it” makes them follow the crowd. Sometimes peer pressure can be _______if your peers encourage you to be a better person. But most peer pressure pushes you to do something you don’t really want to do. And it affects almost everyone without exception. So what can you do to______it?

First of all, you should follow your own feelings and beliefs and be self-confident. When you are self-confident, you can say “no” to the people ______to pressure you. It also helps to have a good friend who respects your beliefs. That way you won’t be ______when you stand up to peer pressure.

1.A.made B.helped C.felt D.heard

2.A.complete B.control C.suggest D.avoid

3.A.friends B.rules C.search D.decision

4.A.slow B.hard C.clear D.useful

5.A.unless B.until C.if D.although

6.A.doubt B.idea C.hope D.promise

7.A.good B.common C.serious D.strong

8.A.affect B.show C.deal with D.talk about

9.A.failing B.trying C.learning D.refusing

10.A.alone B.lucky C.quiet D.popular

九年级英语完型填空中等难度题查看答案及解析

Let’s say you are taking a walk along the road and you happen to see one or two waste bottes lying on the grass beside the road. What would you do?

You may have different choices. Firstly, you can leave the bottles there as they are. It was not you who threw them away. Why should you do something about it? This is quite OK. Secondly, you can pick them up and throw them into a dustbin (垃圾箱). By doing this, you have walked a step further to help make our home clean. This action is a better choice. Thirdly, you might want to pick them up and give them to an old man or woman who collects waste for a living. If this is your choice, you have walked even further. You’re not only thinking about doing something for the environment, you’re also developing yourself to be a person who would think of others and help them.

As for young kids, they may always have such a question: “When do I grow up?" Yes! When does a child grow up? And how can a kid know he or she has grown up? These are interesting questions. As for us, fifteen-year-olds, who are finishing middle school, we’re no longer younger children. We should know whether or not we have grown up. When we start to have a sense of offering a helping hand for a cleaner city and greener world, and when we have a loving heart to think more of others than of ourselves and are ready to help them, we can say that we have grown up.

Remember: If we help others, others will help us. If we do our best for nature, nature will offer its best to us in return!

1.How did the writer start the passage?

The writer did it by giving a(n) ________of daily life.

2.How many choices are there in the second paragraph?

There are ________ choices.

3.What does it mean when you pick up the waste bottles and give them to someone else?

It is a sign that you’re a　 ________ person that has grown up.

4.What does the underlined word “home" refer to in the second paragraph?

It refers to the“________”we live in.

5.How did the writer support the main idea in the passage?

The writer used ________ as an example to support the idea.

九年级英语填空中等难度题查看答案及解析

How can I become a better person? This question has been in my head for long. As students, we spend most of our time studying. I know learning at school, of course, makes us better persons, but I always dream of doing more.

Last year, I got to know a group of autistic(患自闭症的)children. We called them "the Snails(蜗牛)". It was hard to communicate with them at first, because they wouldn't like to. After a two-week training, I became more skilled. I got closer to them day by day. To my surprise, I found that every one of "the Snails" had his or her own talent. And their colorful pictures on the wall attracted my special attention, though it was difficult to tell what they were trying to express.

Moved by their pictures, I decided to hold a charity (慈善) sale. We walked on the busy street, selling their creative pictures. We sold 60 pictures that day. People thought their pictures were full of imagination.

Back to the question about how to become a better person, I think I am lucky enough to get my own answer.

1.Do "the Snails" have their own talents?

2.How many pictures did they sell that day?

3.What is the writer's answer to the question "how to become a better person"?

4.Do you think that selling pictures on the busy street is a very good way to help "the Snails"? Why or why not?

九年级英语回答问题中等难度题查看答案及解析