Fighting an enemy that we cannot see is terri...

Fighting an enemy that we cannot see is terrible. The novel coronavirus（新型冠状病毒） is one of these invisible（看不见的） enemies and it brings us a great disasters. It has infected（感染） 435,519 people in China and other places in the world as of（截至） March 25. It was reported that it killed 3,281 people in China.

But even if we cannot see the virus, we know how it behaves and spreads around. It is just like most other viruses. To prevent any respiratory（呼吸系统）illness, what we can do is to have good personal hygiene（卫生）. And that includes wearing a mask and washing hands. By wearing a mask, we keep ourselves away from the droplets （飞沫）that infected people coughed and （打喷嚏）. These droplets can spread the virus — as far as two meters! But these droplets don’t stay in the air for long. They quickly fall and land on surfaces, like tables or clothes. They can also be passed on to elevator buttons（电梯按钮）and door knobs（把手）by our hands. The novel coronavirus can stay alive for quite a long time on smooth surfaces, so washing hands becomes important.

A new discovery about the virus makes it even more necessary to keep these hygienic habits even if we don’t think we’ve interacted（接触） with anyone infected. According to People’s Daily , there is evidence that the virus might be contagious（有传染性的） even before patients start showing symptoms（症状）. And these people don’t even know that they’re ill yet.

"However, this epidemic（传染病） brings us a positive（积极的） change. It’s that we’ve developed better hygienic habits. After all, washing our hands is really what we should do every day.

根据上面短文内容填空。

1.The novel coronavirus is the enemy that we ___________ and it brings us a great disaster. It has infected 435,519 people in the world as of March 25 and 3,281 people ____________ in China by it.

2.What we can do is to have good personal hygiene, ___________ wearing a mask and __________.

3.When these droplets stay in the air, they _____________ quickly fall and land on surfaces but also can be passed on to elevator buttons and ____________ by our hands.

4.A new discovery about the virus makes it even __________ to keep these hygienic habits even if we don’t think we’ve interacted with _______________.

5.A positive change has _____________ around us since this epidemic began—We’ve developed better hygienic habits. _____________, washing our hands is really what we should do every day.

九年级英语信息归纳困难题查看答案及解析

2020 is an unusual year for the Chinese people. We are suffering a lot because of the Novel coronavirus pneumonia. But luckily, many heroes appeared to help us. As the saying goes, “A hero is known in the time of misfortune”. Zhong Nanshan is a hero like this. He is a doctor in Guangdong who_______ many people’s lives in 2003.

In 2003, SARS_______ in Guangdong. Later, it spread across China and other parts of the world. Patients coughed a lot and got fevers. Hundreds of_______even died from the disease. Many doctors and nurses also got SARS when they treated patients. So, everyone was afraid of it. But Zhong was_______ enough to fight the disease. Zhong spent days and nights trying to find the cause _______ the disease. And with his way of treating, many patients began to get better. Zhong finally won people’s trust.

In early 2020, a disease called Novel coronavirus pneumonia hit Wuhan. It spread _______. Thousands of Chinese people were infected. Zhong, 84, led _______ team to Wuhan to fight the illness. Zhong’s team took many measures to cure the patients with Novel coronavirus pneumonia. He advises people to wear masks, _______ hands frequently, stay at home and not to go to crowded places.

Although Zhong is 84 years old now, he looks really young at his age because of his love for sports .

_______ he was 67, he could still play basketball. As one of the oldest doctors , Zhong still treats patients in the hospital and ______________ young doctors. “I am just a doctor.” Zhong says. But we think he is a hero and a fighter.

1.A.helped B.saved C.liked D.influenced

2.A.took out B.found out C.gave out D.broke out

3.A.patients B.adults C.animals D.birds

4.A.kind B.poor C.brave D.silent

5.A.with B.to C.of D.in

6.A.quickly B.slowly C.safely D.luckily

7.A.my B.his C.her D.their

8.A.weigh B.pollute C.shake D.wash

9.A.When B.Although C.Unless D.Because

10.A.thinks B.trusts C.teaches D.asks

九年级英语完型填空中等难度题查看答案及解析

Germs are very small living things. They are so small that we cannot see them unless we use a microscope. They are found in all kinds of places, all over the world. There are four main types of germs that they can invade (侵入) plants, animals and people, and sometimes they can make us sick.　

Bacteria (细菌) live just about everywhere on earth. Not all bacteria are bad. Some of them are good for our bodies. They help us keep things in balance. Good bacteria live in our bodies and help us use the nutrients in the food we eat and make waste from what's left over. We couldn't make the most of a healthy meal without these important helper germs! On the other hand, there are several types of bad bacteria, including those that cause sore throats.

Viruses (病毒) need a host to keep living. They need to be inside a place of a living plant or animal, including humans, or even inside a bacterium! Whatever a virus lives in is called its host. Once a virus finds the perfect host, the goal is to reproduce and spread. Viruses are pretty tricky because they can change quickly to fit a new environment. When viruses get inside people's bodies, they can spread and make people sick.

Fungi (真菌) are kind of like plants. Unlike other plants, fungi cannot make their own food from soil, water, and air. Fungi love warm and wet places. Most fungi are harmless. The kind that can grow on your skin can be treated. It probably won't hurt you. But it really makes you uncomfortable!

Protozoa (原生动物) are extremely small. Most of them live in water. Some protozoa actually eat bacteria and they are good because they also eat the waste of other small living things. Some protozoa are bad, and they live off of other living things, sometimes humans. For example, if a person drinks unclean water, protozoa may cause health problems.

1.Are germs small?

____________________

2.How many germs are mentioned in the passage?

____________________

3.Why can viruses change quickly?

____________________

4.Where do fungi love to stay?

____________________

5.What does the passage mainly talk about?

____________________

九年级英语回答问题中等难度题查看答案及解析

When we can see well, we do not think about our eyes often: It is only when we cannot see perfectly that we come to see how important our eyes are.

People who are nearsighted（近视的） can only see things that are very close to their eyes. Many people who do a lot of close work, such as writing and reading, become nearsighted. Then they have to wear glasses in order to see distant things clearly.

People who are farsighted face just the opposite problem. They can see things that are far away, but they have difficulty reading a book if they don't hold it at arm's length. If they want to do much reading, they must get glasses too.

Other people do not see clearly because their eyes are not exactly the right shape. This, too, can be corrected by glasses. Some people's eyes become cloudy because of cataracts (白内障). Long ago these people often became blind. Now, however, it is possible to operate on the cataracts and remove them.

When night falls, colors become fainter（更模糊） to the eyes and finally disappear. After your eyes have grown used to the dark, you can see better if you use the side of your eyes rather than the centers. Sometimes, after dark, you see a small thing to one side of you. It seems to disappear if you turn your head in its direction. This is because when you turn your head, you are looking at the thing too directly. Men on guard duty sometimes think they see something moving to one side of them. When they turn to look straight at it, they cannot see it anymore, and they believe they were mistaken. However, this mistake happens because the center of the eye, which is very sensitive (敏感的) in daylight, is not as sensitive as the sides of the eye after dark,

1.According to the passage, a _______ is more likely to be nearsighted.

A. guard                B. doctor                 C. writer                  D. painter

2.People who are farsighted _______.

A. cannot do a lot of close work without glasses

B. can only see things that are very close to their eyes

C. have the same problem as the nearsighted people

D. have difficulty reading a book if they hold it at arm's length

3.To see a small thing at night, we need to look _______.

A. with wide open eyes                             B. with half shut eyes

C. straight at it                                             D. in a slightly different direction

九年级英语阅读理解中等难度题查看答案及解析

When we see well, we do not think about our eyes very often.

It is only when we cannot see perfectly that we _______ how important our eyes are.

People who are near-sighted can only see things that are very close to their eyes. Everything else seems_______.A person _______ does a lot of work, such as writing, reading and sewing becomes near-sighted then.

People who are far-sighted suffer from just the_______ problem. They can see things that are far away, but they have_______ in reading a book unless they hold it at arm's length. If they want to do much _______ , they must wear glasses, too.

Other people do not see clearly because their eyes are not exactly the right shape. They have what is called astigmatism(散光). This, too, can be corrected by glasses. Some people's eyes become _______ because of cataracts（白内障）. Long ago these people often became blind. Now, however, it is possible to operate on the cataracts and remove them.

Having two good eyes is important for judging distances. _______ eye sees things from a slightly different angle(角度).To prove this to_______, look at an object out of one eye; then look at the same object out of your other eye. You will find the object's relation to the background and other things around it has changed. The difference between these two different eye views ________ us to judge（判断）how far away an object is. People who have only one eye cannot judge distance as people with two eyes do.

1.A.remind B.receive C.review D.realize

2.A.unhappy B.unpleasant C.unclear D.unfair

3.A.what B.who C.when D.which

4.A.right B.same C.wrong D.opposite

5.A.difficulty B.fun C.time D.experience

6.A.shopping B.cleaning C.reading D.fishing

7.A.cloudy B.sunny C.windy D.rainy

8.A.Each B.Every C.Both D.All

9.A.yourself B.himself C.herself D.myself

10.A.helps B.makes C.encourages D.agrees

九年级英语完型填空中等难度题查看答案及解析

—It is a pity that the disease is terrible at present.

—Yes. It will be worse ________ we take action to do something for it.

A.if B.unless C.until D.when

九年级英语单选题中等难度题查看答案及解析

　　 terrible weather it is today! We can’t play football in the playground.

A. What B. What a C. What an D. How

九年级英语单选题中等难度题查看答案及解析

—What’s the weather like there?

—It is terrible. It’s raining so _________ that we can ___________ go out.

九年级英语单项填空中等难度题查看答案及解析

It is reported　　 that a terrible rainstorm hit_____ south of our country last night.

A. the　　　　　　　　　　 B. a　　　　　　　　 C. an

九年级英语单项填空简单题查看答案及解析

The Smallest Life Around Us

Tiny plants and animals live all around us．We cannot see them because they are so small，but they are everywhere. They live in the soil，in the air，and in rivers and oceans．They grow on mountains and in caves．Some live in the ice at the north and south poles; some live where it is very hot．They are found throughout cities and in the country. They grow on other plants and animals．Some are even living on you，on your skin，hair，and inside your body，in your mouth，nose，and all through your body．

These tiny plants and animals are called microbes．The word microbe is made from two other words：micro，meaning small，and bios，meaning life．So，microbe means small life．

Microbes have been on earth for a very long time．They may have been the first forms of life to be alive．Today there are more microbes in the world than all other living things．

People did not know microbes had existed（存在） long．They were too small for them to see．But people did see many changes in their world﹣important changes．And they did not know what caused them．They saw food that they kept too long change color and begin to smell bad．They saw cuts and wounds grow red and painful and become worse. They saw old plants and leaves and trees crumble apart on the forest floor and disappear into the soil．Such changes were a natural part of the world，but people did not understand them．They did not know these changes were evidence(证据) of tiny plants and animals growing all around them.

1.Why couldn't people see microbes？

A. Because they are too small．

B. Because they live inside our body．

C. Because they live far from humans．

D. Because they may have been the first forms of life to be alive．

2.The underlined phrase" crumble apart" in the last paragraph means"　　　 　"．

A. grow taller　　 B. change into soil

C. break into tiny pieces　　 D. become colorful and energetic

3.Choose the answer that completes the web below．

A. Microbes are very small　　 B. Microbes are all around us

C. People can't see microbes　　 D. Food begins to smell bad

九年级英语阅读理解困难题查看答案及解析