When we are born, we are given names that sta...

When we are born, we are given names that stay with us for our whole lives. Some names include good wishes and hopes from parents, while others may be special and easy to remember. But do you know how the new coronavirus got its name?

According to International Committee on Taxonomy of Viruses, an organization responsible for naming new viruses, the task of naming a virus is no less important than naming a person.

Over the past decade, some improper names have caused problems. In 2009, the “swine　 flu” was widely used before the official name, H1N1 virus, was announced. This led Egypt to　 kill all of its pigs even though it appeared and spread among people who hadn’t been near pigs. In 2015, MERS (Middle East Respiratory Syndrome) caused some actions against the nations and people of this area.

So in 2015, the World Health Organization (WHO) announced that the names of viruses should be easy to remember but avoid being named after geographic locations, people, species　 or classes of animals and foods.

Following these rules, the new coronavirus we are suffering from was named “COVID-19” by the WHO on Feb. 11. In this name, “CO” means “corona”, “VI” stands for “virus” and “D” means “disease”.

Next time you read about a virus you don’t know, you may get some clues about it from its name.

Word Bank

virus病毒　 responsible 负责的　 announce宣告

根据材料内容选择最佳答案。

1.The first paragraph is written to________.

A.show the writer’s feelings B.lead in the topic of the text

C.tell us the background of names D.remind the readers of their names

2.What does the underlined sentence mean?

A.Naming a virus is as important as naming a person.

B.Naming a virus is less important than naming a person.

C.Naming a virus is the most important thing for a person.

D.Naming a virus is more important than naming a person.

3.Which of the following is an official name of a virus?

A.swine flu B.World Health Organization C.Coronavirus D.COVID-19

4.The “swine flu” and MERS________.

A.broke out in Middle East B.both spread among pigs

C.were both improper names D.appeared in the same year

5.Which magazine does the passage probably come from?

A. B. C. D.

九年级英语阅读单选中等难度题查看答案及解析

It’s true that we are not born for　 _.

A．us B．ours C．ourselves

九年级英语单项填空简单题查看答案及解析

Air is always around us. It is around us when we walk and play. From the time we are born, air is around us. When we sit down, it is around us. When we go to bed, air is also around us. We live in air.

All the animals and plants need air. Living things can’t live without air. We can live without food or water for a few days, but we can not live for more than a few minutes without air. We breathe in air. When we are walking or running, we need more air. When we are asleep, we need less air.

We live in air, but we can’t see it. We can only feel it. We can feel it when it is moving. Moving air is called wind. How can we make air move? Here is one way. Hold and open a book in you hand in front of your face. Close it quickly! What you feel is the air.

1._________ need air.

A. Some of the animals　　　　　　　　　 B. All the things

C. Some of the plants　　　　　　　　　 D. All the animals and plants

2.We can live for a few days __________.

A. without air　　　　　　　　　 B. without food or water

C. without food or air　　　　　　　　　 D. without air or water

3.We need _________ air when we are asleep.

A. less　　　　　　　　　 B. no　　　　　　　　　 C. most　　　　　　　　　 D. a lot of

4.Which of the following sentences is TRUE(对的)?

A. Sometimes we don’t live in air.　　　

B. Air is not around us when we go to bed.

C. We can live happily without air.　　

D. We need more air when we are working or running.

5.We live in air, but we can’t ________ it.

A. look　　　　　　　　　 B. see　　　　　　　　　 C. get　　　　　　　　　 D. feel

九年级英语阅读理解中等难度题查看答案及解析

— Can you stay here for dinner with us?

— Sorry, I　　 . My parents are waiting for me at home.

A.mustn’t B.can’t C.needn’t D.couldn’t

九年级英语单选题中等难度题查看答案及解析

When we stayed at the country house, we had only enough water for drinking. That’s why we didn’t take a ________ for two days.

A．bath             B．visit              C．drink             D．walk

九年级英语单项填空简单题查看答案及解析

- When we are in danger, we need to stay_______.

- Exactly. Only in this way can we come up with good ideas.

A. still                       B. quiet                    C. calm           D. silent

九年级英语单项填空中等难度题查看答案及解析

— Thanks for staying with me and making me comfortable, Mei.

— 　　　　 . That’s what friends are for.

A. My pleasure     B. Good idea　

C. Of course　     D. It’s nice of you

九年级英语单项填空中等难度题查看答案及解析

We are planning to go to Hainan for the coming winter holiday and we’ll stay there for ______ with my grandparents.

A. some time B. sometimes

C. sometime　　 D. some times

九年级英语单项填空中等难度题查看答案及解析

We humans are only born with one set of eyes, so it's our job to take care of them for our whole lives. The good news is that if we do a few simple things every day, we can maintain (保持) our eyesight and reduce (减少) the risk of ever hurting our eyes.

Almost all doctors agree that we can improve and maintain good eyesight by eating lots of fresh fruits and vegetables. It is especially important for us to eat vegetables like carrots and sweet potatoes.  Besides, we need to protect our eyes when we spend a long time in bright sunlight. The best way to do. this is by wearing sunglasses that have 100% UV (紫外线)  protection. What's more, it is necessary to protect our eyes when we work with dangerous chemicals (化学物质).  For this reason we should always wear goggles in chemistry labs at work or at school. Finally, we should not spend too much time in front of the computer or television screen. That is why doctors advise if we have to use a computer for a long time, we should take a short break every fifteen or thirty minutes.

Maintaining good eyesight is important. If we do these few simple things we can protect our eyes and reduce the chances of losing our eyes. As the popular English expression goes, “It's all fun and game, until someone loses an eye.” When people say this, they mean that losing an eye is a very terrible thing.

1.When should we wear goggles?

A. While watching TV.

B. While using a computer.

C. While staying in the sun.

D. While working in a chemistry lab.

2.How many pieces of advice are given in the passage?

A. Two.          B. Three.         C. Four.         D. Five.

3.What does the underlined word ‘that’ refers to?

A. We should eat lots of fresh fruits and vegetables.

B. We should take a short break every fifteen or thirty minutes.

C. We should not spend much time in front of a computer or TV.

D. We should do a few simple things every day to keep our eyesight.

4.Which would be the best title for the passage?

A. Fun and Games with Our Eyes

B. Caring for Our Eyes

C. The Risk of Hurting Our Eyes

D. Born with One Set of Eyes

九年级英语阅读理解困难题查看答案及解析

They tell us when to get up or when we’re running late for work and whether we are in danger of missing our favourite TV programme. But while our daily activities depend on clocks that tell us the time science is discovering that our well-being is influenced by a very different kind of timepiece. Circadian rhythms---the human body’s own internal(体内的) clock—have a powerful influence on our health and behaviour. They are programmed from birth and control functions ranging from temperature and blood pressure to sleep patterns.

In recent years researchers have also discovered that this built-in mechanism (内在机制) can influence everything from the way we react to medicines to how well we learn music.

The latest example, from experts at Harvard University in the US, shows that the human body clock can even influence whether or not we are likely to tell the truth. Researchers found it was easier for people to tell lies in the afternoon because as they were tired, the self control that would normally prevent them from lying started to break down. Tiredness made it easier for them to tell lies ---especially if it meant they got a financial reward at the end.

“The body clock has a great effect on us all,” says Professor Jim Horne from the Sleep Research Centre at Loughborough University. “Most people tend to feel good around late morning and then decline in the early afternoon. But the time most of us will feel our sharpest is between 6pm and 8pm. That’s because sleepiness tends to build up throughout the day. By early evening our body clock kicks in to wake us up. One reason may be to ensure we get home safely. When our ancestors (祖先) were coming home after hunting all day, their internal clocks kicked in to get them home in one piece.”

So what effects do circadian rhythms have and what’s the best time of day to take advantage of them?

1.The underlined word “They” in the first paragraph refers to_____ .

A. our health and behaviour　　 B. scientists and experts

C. our daily routines　　 D. circadian rhythms

2.The research referred to in Paragraph 3 found that people would rather ______ .

A. tell lies when they are tired　　 B. tell lies if they are rewarded

C. get angry as they become tired　　 D. break down because they are tired

3.According to the passage, when are people most quick-thinking?

A. In the morning.　　 B. Around midday.

C. In the late afternoon.　　 D. In the early evening.

4.What information will the writer probably give following the last paragraph?

A. An explanation of how the human body clock controls the body.

B. Examples of how the human body clocks control the body.

C. Examples of the most suitable time to do different activities.

D. Some practical suggestions to prevent people from lying.

九年级英语阅读单选中等难度题查看答案及解析