—Mum, can you tell me ______ I can wear the f...

—Mum, can you tell me ______ I can wear the face mask (口罩)?

—Cover your face and nose with it and make sure there's no space between them.

A.when B.how C.where

九年级英语单选题中等难度题查看答案及解析

“Wear a mask(口罩), ________　 you can’t enter the building.” Peter said.

A.or B.so C.but D.and

九年级英语单选题中等难度题查看答案及解析

COVID-19（新冠病毒）has stopped people from working for several months. In recent days, many people have returned to work. 1. Here is some advice.

When commuting（通勤）

Avoid taking public transport. 2. If you have to take public transport, you shall wear a face mask（口罩）through the ride and try to avoid touching objects in the vehicles（车辆）with your hands.

Entering the workplace

Wear a face mask and receive body temperature check before entering the office building. You must pass the body temperature check before being allowed in. 3. If you have signs such as fever, please go to the fever office of a hospital at once.

Using a lift

Avoid using the lift if you are going to or leaving lower floors. Use the stairs instead. Stand clear of lift doors while waiting. 4.

In offices

5. Do it three times a day for 15 minutes to half an hour each time. You can only get infected（感染的）if the virus builds up in large numbers. Fresh air can stop the virus from building up.

Keep healthy habits such as eating a healthy diet, exercising and getting enough sleep. They can improve your immunity（免疫力）.

A.Try to walk, cycle or drive to your office instead.

B.What steps of prevention（预防）and control are needed?

C.Do not stand face to face with people while waiting.

D.Open windows to let fresh air in during the day.

E.Wash hands in time.

九年级英语补全短文5选5中等难度题查看答案及解析

It's reported that a Chinese company has created a new facial recognition system that can identify (识别) people even if they are wearing masks. Developers began working on the new system in January 2020 when the novel coronavirus appeared in China. The fast spread of the virus has led most people to wear masks in public to protect themselves and people around.

China is regarded as a world leader in the development of artificial intelligence (AI). According to engineers at the Beijing——based Hanwang Technology Ltd, this system is the first to be created to identify people wearing face masks. A team of 20 engineers completed it in about a month, adding a collection of about 6 million unmasked faces and a smaller collection of masked faces," the company said.

Hanwang is now selling two main kinds of products using the new technology. One performs single channel recognition (单通道识别), which will be used at the entrances to buildings. The other product is a multi—channel (多通道识别) recognition system that uses groups of cameras. It's said thatthe multi—channel system can identify a person in a crowd of up to 30 people within a second.

When people wear a mask, the recognition rate　 can reach about 95 percent," said Huang Lei, Hanwang's vice president. The system's success rate for people without wearing a mask is about 99. 5 percent."

Nowadays the new system is trying to identify people with both sunglasses and a mask. In such cases, all of the key facial information is lost, making recognition hard," Huang said.

1.What does Paragraph 1 mainly want to tell us?

A.The truth that people should wear masks in public.

B.The reason why a new facial recognition system was created.

C.The time when the novel coronavirus appeared in China.

2.How is the facial recognition system able to recognize masked faces?

A.After many unmasked and masked faces are stored in it.

B.After just a large collection of masked faces are added to it.

C.After 20 engineers work hard for a month.

3.What do we know about the multi—channel recognition system?

A.It can identify people with sunglasses and masks.

B.It can be found at the entrances to buildings.

C.Many cameras are used at the same time.

4.Which part of the head does the system mainly pay attention to when a person wears a mask?

A.The hair. B.The ears. C.The eyes.

5.The writer wrote the passage to________.

A.show the rapid development of China

B.explain the popularity of AI

C.introduce a new recognition system

九年级英语阅读单选困难题查看答案及解析

In Beijing，you can see many people wear masks（口罩） if they _______ out on foggy days．

A. went　　 B. go　　 C. are going　　 D. will go

九年级英语单项填空极难题查看答案及解析

As we all face the novel coronavirus, protecting yourself is the same as protecting others. Here are some safety suggestions.

Stay away from crowds and wear masks（口罩）

如果你不得不去拥挤的地方，记得戴口罩。Keep at least one metre between yourself and other people, particularly those who are coughing or sneezing.

Why? The droplets （粘液飞沫）can be transmitted farther by sneezing or coughing than by speaking. If you are too close, you can breathe in the virus （病毒）. Wearing a mask can stop droplets from reaching your face or mouth.

Keep proper indoor ventilation （通风）

Keep proper indoor ventilation while at home. Open windows to let in fresh air during the day. It's best to do this three times a day for 15 minutes to half an hour each time.

Why? The virus can only infect （感染）you when it builds up to a certain amount. Proper ventilation can stop the virus from gathering into a larger amount.

Keep up good habits

Keep healthy habits such as eating healthily and exercising regularly, as well as getting enough sleep.

Why? Doing these things can strengthen your immune system, making it less likely for you to become infected.

Wash hands properly

Remember to wash your hands before eating, after going to the bathroom, coming home, coming into contact with rubbish and touching animals. Avoid touching your eyes, nose and mouth before washing your hands.

Why? Your hands might touch surfaces with the virus. Washing your hands in time can stop the virus from entering your body.

1.将文中划线的汉语句子翻译成英语。

__________________________________________

2.回答问题：

How long should we keep proper indoor ventilation during the day?

__________________________________________

3.将文中划线的英语句子翻译成汉语。

__________________________________________

4.从文中找出与下面所给句子意思相同的句子。

You can only be infected when the virus reach a certain amount.

__________________________________________

5.回答问题：

How many pieces of advice are mentioned in 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

--- Can you tell me what to wear at the party?

---If I 　　　　　　 you, I 　　　　　　 the blue jeans.

A. am; would wear 　　 B. was, will wear

C. were, would wear　　 D. were, wore

九年级英语单项填空简单题查看答案及解析

---Can you tell me what to wear at the party?

　　　　 ---If I ___you,I___the blue jeans.

A.was,will wear　　 B.am,will wear　　 C.were,would wear　　 D.were,wore

九年级英语单项填空中等难度题查看答案及解析

In the year of 2020, the coronavirus（新冠病毒）out broke（爆发）all over the world. A lot of people suffered from（遭受……折磨）a fever or a cough. Don't be afraid. Here is some advice to help you protect yourself.

Wash your hands. You need to wash your hands with soap and water before you eat, after you use the toilet, and after you touch animals, because your hands may carry viruses (病毒). Cover your nose and mouth. When someone sneezes（打喷嚏）or coughs，the viruses can travel as far as one meter through the air，so you'd better stand a proper distance while talking to someone who has a cold. And always cover your mouth and nose with a piece of paper when you sneeze or cough，and then clean your hands. Wear a mask(口罩). Some doctors say that masks can stop the virus as much as 80%, but if you don't wash your hands often, it's no use wearing a mask. So it's necessary to wear the mask in the groups of people.

Do sports often. Exercises will help make your body strong enough to resist（抵抗）the virus.

九年级英语信息归纳中等难度题查看答案及解析

--- Can you tell me ______ on the Internet?  --- OK, mum.

A. how can I use QQ                  B. where can I use QQ

C. how I can use QQ                  D. whether can I use QQ

九年级英语选择题困难题查看答案及解析