How to DIY Your Own MaskDuring the outbreak o...

How to DIY Your Own Mask

During the outbreak of COVID-19, one of the must-have items is the mask. However, many countries are in bad need of medical masks and other protective equipment. 1. But we can make our own masks which can be used repeatedly. Now, let’s look at the most popular DIY method for soda bottle gas masks.

2. And it doesn’t require huge skills. With necessary materials and a little training, it can be made in 15 minutes.

To make such a mask project, you’ll require a sharp cutting tool, a market, glue, a 2-liter soda bottle, rubberized foam insulation strip (泡沫橡胶绝缘条) and one N95 mask. Total cost may be $5.

First, you’ll have to clean the 2-liter plastic bottle. After that, draw a U-shaped area using the marker. 3. Then start with a smaller cut and work your way up from there. Cut away the bottom of the bottle and you’ll end up with a basic shape.

Next, use the rubberized foam insulation as a seal for the edges of the bottle. 4. This will serve as a resting place for the N95 mask. Then cut off the N95 mask’s edging carefully. And place is inside the neck of the bottle. The elastic bands (橡皮筋) from the N95 mask will be used to secure the gas mask firmly on your face. Then a DIY gas mask is completed.

Do remember to keep the gas mask stored in a well sealed plastic bag. 5.

A.In this way you can make good use of the bag.

B.This can prevent it from getting polluted.

C.The soda bottle gas mask is very simple to make.

D.In this situation it is hard for people to get enough masks.

E.It should be big enough to fit your face and yet not too big.

F.Actually, the idea of DIY gas masks dates back to WW II.

G.You should also make a circle of foam insulation inside the bottle.

高三英语七选五中等难度题查看答案及解析

请阅读下面文字，并按照要求用英语写一篇150词左右的文章。

Due to the outbreak of COVID-19, schools across the country have put off opening. For more than two months, students have been taking online classes at home.

（写作内容）

1. 用约30个单词概述上述信息的主要内容；

2. 结合上述信息，谈谈“自律”的重要性(至少两点)；

3. 就如何培养“自律”，提出你的建议(至少两点)。

（写作要求）

1. 写作过程中不能直接引用原文语句；

2. 作文中不能出现真实姓名和学校名称；

3. 不必写标题。

（评分标准）

内容完整，语言规范，语篇连贯，词数适当。

_______________________________________________________________________________________________________________________________________________________________________________________________________________

高三英语读写任务困难题查看答案及解析

Following the outbreak of the novel coronavirus pneumonia (NCP), also named COVID -19 by WHO, there is a general fear of the unknown virus as its full effects remain to be seen. Fever, coughing, sore throat, difficulty breathing – the NCP’s symptoms are similar to the common cold or the flu, but it’s potentially more dangerous.

Viruses could be deadly, like HIV and Ebola. 1. How can they cause so much trouble?

Viruses are non-living organisms approximately one-millionth of an inch long. Unlike human cells or bacteria, they can’t reproduce on their own. Instead, they invade the cells of living organisms to reproduce, spread and take over.

Viruses can infect every living thing – from plants and animals down to the smallest bacteria. 2. Sometimes a virus can cause a disease so serious that it is fatal. Other viral infections bring about no noticeable reaction.

Viruses lie around our environment all of the time, waiting for a host cell to come along. They can enter our bodies by the nose, mouth, eyes or breaks in the skin. 3. For example, HIV, which causes AIDS, attacks the T-cells of the immune system.

But the basic question is, where did viruses first come from? 4. “Tracing the origins of viruses is difficult,” Ed Rybicki, a virologist at the University of Cape Town in South Africa, told Scientific American, “because viruses don’t leave fossils (化石) and because of the tricks they use to make copies of themselves within the cells they’ve invaded.”

However, there are three main theories to explain the origin of viruses. First, viruses started as independent organisms, then became parasites (寄生者). Second, viruses evolved from pieces of DNA or RNA that “escaped” from larger organisms. Third, viruses co-evolved with their host cells, which means they existed alongside these cells.

5. The technology and evidence we have today cannot be used to test these theories and identify the most plausible explanation. Continuing studies may provide us with clearer answers.

A.But what are viruses?

B.For the time being, these are only theories.

C.Once inside, they try to find a host cell to infect.

D.The answer may be even less satisfactory than it now appears.

E.Until now, no clear explanation for their origin exists.

F.Experts are concerned about the bad effect that it had on people’s health.

G.For this reason, they always have the potential to be dangerous to human life.

高三英语七选五中等难度题查看答案及解析

Following the outbreak of the novel coronavirus pneumonia (NCP), also named COVID—19 by WHO, there is a general fear of the unknown virus as its full effects remain to be seen. Fever, coughing, sore throat, difficulty breathing—the NCP’s symptoms (症状) are similar to the common cold or the flu, but it’s potentially more dangerous.

Viruses could be deadly, like HIV and Ebola (埃博拉). But what are viruses? How can they cause so much trouble?

Viruses are non-living organisms (有机体) approximately one-millionth of an inch long. Unlike human cells or bacteria, they can’t reproduce on their own. Instead, they invade (入侵) the cells of living organisms to reproduce, spread and take over.

Viruses can infect every living thing — from plants and animals down to the smallest bacteria. For this reason, they always have the potential to be dangerous to human life. Sometimes a virus can cause a disease so serious that it is fatal. Other viral infections trigger (引起) no noticeable reaction.

Viruses lie around our environment all of the time, waiting for a host cell to come along. They can enter our bodies by the nose, mouth, eyes or breaks in the skin. Once inside, they try to find a host cell to infect. For example, HIV, which causes AIDS, attacks the T-cells of the immune system.

But the basic question is, where did viruses first come from? Until now, no clear explanation for their origin exists. “Tracing the origins of viruses is difficult,” Ed Rybicki, a virologist at the University of Cape Town in South Africa, told Scientific American, “because viruses don’t leave fossils (化石) and because of the tricks they use to make copies of themselves within the cells they’ve invaded.”

However, there are three main hypotheses (假说) to explain the origin of viruses. First, viruses started as independent organisms, then became parasites (寄生者). Second, viruses evolved from pieces of DNA or RNA that “escaped” from larger organisms. Third, viruses co-evolved with their host cells, which means they existed alongside these cells.

For the time being, these are only theories. The technology and evidence we have today cannot be used to test these theories and identify the most reasonable explanation. Continuing studies may provide us with clearer answers. Or future studies may reveal that the answer is even murkier (含糊不清的) than it now appears.

1.What can we learn about viruses from the text?

A.Viruses have nothing to do with the common cold.

B.Viruses are really small living organisms.

C.Viruses can’t reproduce unless they find a host cell.

D.Viruses enter our bodies mainly through the mouth, nose and hair.

2.Which of the following might explain the origin of viruses?

A.They evolved from the fossils of large organisms.

B.They evolved from parasites into independent organisms.

C.They evolved from the T-cells in animals.

D.They evolved along with their host cells.

3.What can we conclude from the text?

A.Viruses live longer in human host cells than in animals’.

B.Viruses will become more like bacteria as they evolve.

C.It may take a long time to understand the origin of viruses.

D.The author is optimistic about future virus research.

4.What’s the best title of this passage?

A.The Mystery of Virus Evolution

B.The Invasion of Deadly Viruses.

C.The Reaction of Viral Infection

D.The Future Studies of Viruses

高三英语阅读理解中等难度题查看答案及解析

Following the outbreak of the novel coronavirus pneumonia (NCP), also named COVID-19 by WHO, there is a general fear of the unknown virus as its full effects remain to be seen. Fever, coughing, sore throat, difficulty breathing —the NCP’s symptoms are similar to the common cold or the flu, but it’s potentially more dangerous.

Viruses could be deadly, like HIV and Ebola. But what are viruses? How can they cause so much trouble?

Viruses are non-living organisms (有机体) approximately one-millionth of an inch long. Unlike human cells or bacteria, they can’t reproduce on their own. Instead, they invade the cells of living organisms to reproduce, spread and take over.

Viruses can infect every living thing – from plants and animals down to the smallest bacteria. For this reason, they always have the potential to be dangerous to human life. Sometimes a virus can cause a disease so serious that it is fatal. Other viral infections trigger no noticeable reaction.

Viruses lie around our environment all of the time, waiting for a host cell to come along. They can enter our bodies by the nose, mouth, eyes or breaks in the skin. Once inside, they try to find a host cell to infect. For example, HIV, which causes AIDS, attacks the T-cells of the immune system.

But the basic question is, where did viruses first come from? Until now, no clear explanation for their origin exists. “Tracing the origins of viruses is difficult”, Ed Rybicki, a virologist (病毒学家) at the University of Cape Town in South Africa, told Scientific American, “because viruses don’t leave fossils and because of the tricks they use to make copies of themselves within the cells they’ve invaded”.

However, there are three main hypotheses (假说) to explain the origin of viruses. First, viruses started as independent organisms, then became parasites (寄生者). Second, viruses evolved from pieces of DNA or RNA that “escaped” from larger organisms. Third, viruses co-evolved with their host cells, which means they existed alongside these cells.

For the time being, these are only theories. The technology and evidence we have today cannot be used to test these theories and identify the most plausible explanation. Continuing studies may provide us with clearer answers. Or future studies may reveal that the answer is even murkier (含糊不清的) than it now appears.

1.What can we learn about viruses from the text?

A.Viruses have nothing to do with the common cold.

B.Viruses are really small living organisms.

C.Viruses can’t reproduce unless they find a host cell.

D.Viruses enter our bodies mainly through the mouth, nose and hair.

2.Which of the following might explain the origin of viruses?

A.They evolved from the fossils of large organisms.

B.They evolved from parasites into independent organisms.

C.They evolved from the T-cells in animals.

D.They evolved along with their host cells.

3.The underlined word “plausible” in the last paragraph probably means ________.

A.reasonable B.common

C.creative D.unbelievable

4.What can we conclude from the text?

A.Viruses live longer in human host cells than in animals’.

B.Viruses will become more like bacteria as they evolve.

C.It may take a long time to understand the origin of viruses.

D.The author is optimistic about future virus research.

高三英语阅读理解中等难度题查看答案及解析

A recent survey has demonstrated that a large number of victims during the COVID-19 Outbreak______，if they had worn masks.

A.should have been saved

B.must have been saved

C.need have been saved

D.could have been saved

高三英语单项填空中等难度题查看答案及解析

The outbreak of Covid-19 has meant an _____ change in our life and work.

A.absurd B.abrupt C.allergic D.authentic

高三英语单项填空困难题查看答案及解析

With schools close in the UK during the COVID-19 outbreak, most children must now be homeschooled. Parents have found themselves not only having to balance work and having the children at home but also having to try and teach them. How can you keep your children focused while learning?

Nicola Anderson--Head of Customer Support at the UK’s leading online tutoring service MyTutor, provides new, up-to-date tips to hearten parents at this difficult time and advises how they can structure their children’s days.

One is to keep to a regular timetable so it still feels like your child is taking part in the school day. Ms Anderson said: “Children of all ages do well on routine and boundaries; schools provide this in abundance and it will most children feel secure and happy if they can follow a similar timetable for their homeschooling.”

Another tip is to create an environment which is favorable to learning. She said:” The environment should be free from distractions and ideally near to an open window, to provide them with appropriate levels of fresh air and natural light. Some children find it comfortable and helpful to have quiet, instrumental music playing in the background to help them to focus, but this isn’t for everyone.”

Using technology to help with your child’s learning is also advised. Many schools are offering online classes and resources to help and companies are reducing or even not charging their fees during this time.

It is also important to keep physical exercise as a part of your routine. Joe Wicks, otherwise known as The Body Coach, has been keeping kids healthy with daily 10 minute workouts for children on his Youtube channel. Ms Anderson said:” It can be anything from running around the garden, walking the dog, a game of football or dancing around your living room!”

1.Who is the text intended for?

A.Student. B.Teachers.

C.Coaches. D.Parents.

2.What does the underlined word“this" in paragraph 3 refer to?

A.Homeschooling. B.Tutoring service.

C.A regular timetable. D.Difficult time:

3.What may Nicola Anderson agree?

A.To allow children to adjust schedule freely.

B.To offer children peaceful study environment.

C.To recommend high-tech to online schools.

D.To combine routine with kids' mental heath.

4.What is the text mainly about?

A.How to improve homeschooling efficiency.

B.How to obtain online learning resources.

C.How to study attentively at home.

D.How to design a proper schedule.

高三英语阅读理解中等难度题查看答案及解析

How is this virus transmitted?

This is an outbreak of disease that started in Wuhan, one of the central Chinese cities. It’s caused by a novel coronavirus that means it’s brand-new. 1.

What are the symptoms?

The virus is from a family called the coronaviruses. The symptoms of this illness are pretty mundane (平 凡的) on the face of it: it’s a dry cough fever and then breathing problems. 2. However, as for the more severe cases, people have gone on to develop viral pneumonia, and all the deaths have been among those people.

3.

This brand-new coronavirus came from animals, and it’s believed that the source was actually a seafood market in Wuhan, which also sells wild animals. So far all the cases have come out of Wuhan. But some people haven’t picked it up there.

Should I be panicking about this outbreak?

As we can see, older people are ending up in hospital with the virus. They’re usually over 40, and the very youngest person diagnosed is about 13 or 14 years old. So it doesn’t appear to be affecting small children.

4.. Basically, their immune systems are not very strong, and they’re going to find it very hard to fight off a virus.

It’s necessary for ordinary people to wear masks and doctors should wear protective clothing.

How is this virus transmitted?

We’ve only just discovered that the new coronavirus is actually transmitted from one person to another. It was hoped at first actually that it just came from animals as all coronaviruses do.　 5. .So　　 we’ve　　 got people to people transmission, because the market has been closed for sometime, and there are cases in people who’ve never been near it.

A.It seems quite mild in lots of people.

B.Where have cases been confirmed so far?

C.It is so new that actually it doesn’t have a name yet.

D.People diagnosed with viral pneumonia will die.

E.It is a brand-new virus so we don’t know how it’s going to behave.

F.Those confirmed cases who have died tend to have heart disease or cancer already.

G.Now it looks as though it is actually passed from one human being to another, however.

高三英语七选五简单题查看答案及解析

If you're one of the millions of Americans now trapped in home because of the COVID-19，it might feel like you're cooking more than you've ever cooked in your entire life. And maybe you' re planning to reduce your home food wastes. A good way of dealing with them is to learn to make compost (堆肥).

Select your food wastes. Start with fruits and vegetables — the skin of a sweet potato，the top of your strawberry. Also tea bags, coffee grounds, old flowers and even eggshells are good raw materials. Store these food wastes in a container so you can add them bit by bit. The container doesn't have to be bought online. It can just be an old milk carton (纸箱) or an old wooden chest —just work with what you have available. Also, you can store the food wastes in a bag in your freezer or fridge. That's an easy way to avoid odors and insects in your kitchen.

The crucial step is to make the compost mix. In the world of composting you're inevitably going to hear about ''the greens and browns''—the two main elements for your mix. ''Greens'' are typically wet food wastes, like fruit and vegetable peelings. They are a crucial part for the growth of organisms (微生物),''Browns" are typically dry and they are more carbon rich like newspapers, dried leaves，and pine needles. A good thing to remember is when you're layering， put the dry browns on the bottom with the wet greens on the top because they allow water and air to flow. That will make sure organisms can do their job.

How long do you have to wait for the compost breakdown? If it's hot, you could get there in two months pretty easy. If it's cold, you could be there in six months, And for every component to break down, it might be a year.

In the end ''your nose knows'' when the compost is ready. It just smells so woody, earthy, sweet or sometimes sour. The smell can tell how well you work at your compost.

1.What is a good solution to your home food wastes?

A.Make a plan and reduce the wastes.

B.Collect the picked wastes to make compost.

C.Select the wastes and bury them into the earth.

D.Pick the wastes and put them in a bag in your fridge.

2.What plays a crucial role in making the compost mix?

A.Wet ''greens''

B.Dry "browns''

C.Carbon rich materials.

D.Wet ''greens'' and dry ''browns''.

3.Why should the ''browns'' be put on the bottom with the ''greens'' on the top?

A.To help the organism work on the compost efficiently.

B.To save more space for the water and air to flow.

C.To allow the water and air to flow into the container.

D.To make sure the organism can live longer and better.

4.What does the author feel about making compost?

A.Pretty easy and fun.

B.Complex and time killing.

C.Demanding patience but worthwhile.

D.Calling for hard work but enjoyable.

高三英语阅读理解中等难度题查看答案及解析