30 tháng 8 2021 lúc 9:43
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Colds and flu are caused by viruses. The infections are contagious, passed on by tiny droplets and hand contact. There are hundreds of different types of virus that can cause cold, which explains why children get repeated colds. Flu is caused by the influenza virus. There are three major types: A (often the cause of flu epidemics), B and C. The flu virus is constantly changing its structure, so new strains appear each year. We don’t have immunity to the new strains, which is why we can catch flu...
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Colds and flu are caused by viruses. The infections are contagious, passed on by tiny droplets and hand contact. There are hundreds of different types of virus that can cause cold, which explains why children get repeated colds. Flu is caused by the influenza virus. There are three major types: A (often the cause of flu epidemics), B and C. The flu virus is constantly changing its structure, so new strains appear each year. We don’t have immunity to the new strains, which is why we can catch flu repeatedly. Anyone can catch a cold or flu. The peak season for colds is the colder winter months, not only because of the weather but because central heating dries out the normally moist nasal mucosa-an important defense against invading viruses. However, you can catch a cold at any time of the year; one particular type of cold virus thrives in the summer. Flu rarely occurs outside November to February in the UK. A cold causes a stuffy or runny nose, sneezing, sore throat, cough, mild fever and tiredness, lasting from two to four days. Flu is more severe with a high fever (usually 39oC or above), chills, headache, intense muscle pains, exhaustion, loss of appetites, cough and sometimes a blocked nose and sore throat. It may last a week or more and possible complications include pneumonia. Most cold don’t last long and need no specific treatment other than painkillers and simple measures such as decongestant rubs or vaporizers. Antibiotics are of no benefit. Zinc supplements may help to settle a cold more quickly. Children with flu can be given similar treatments, with lots of rest, medicine to bring down any fever and plenty of fluids to avoid dehydration. Lowering the temperature in the room can also be helpful when someone has a fever. Specific antiviral treatments for flu are now available, but generally these are only given to those at high risk of flu complications.
1. What are cold and flu caused by?
…………………………………………………………………………
2. Why do children get repeated colds?
……………………………………………………………………………
3. How many influenza viruses is flu caused by? What are they?
………………………………………………………………………………………………………….
4. Who can catch a cold or flu?
…………………………………………………………………………………………………………..
5. Which season do people usually get cold the most in the year?
……………………………………………………………………………………………………………
6. What symptoms do colds often cause?
………………………………………………………………………………………………………………..
7. How many days does a cold last?
………………………………………………………………………………………………………………………..
8. What symptoms does flu often cause?
……………………………………………………………………………………………………………………………
9. How long does flu last?
……………………………………………………………………………………………………………………………..
10. When someone gets colds, what measures should be used instead of painkillers?
………………………………………………………………………………………………………………………..
. Rewrite the sentences below so that it has the same meaning to the first one.
31. “Are the children playing in the garden now ?” Hoa said to Tim.
-Hoa asked Tim _________________________________________________________
32. Is it alright if I take a photograph ?.
-Wouldyou mind________________________________________________________ 33. They built a new church near my house last month.
-Anew church __________________________________________________________
34. Mai began learning English 10 year...
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. Rewrite the sentences below so that it has the same meaning to the first one. 31. “Are the children playing in the garden now ?” Hoa said to Tim. ->Hoa asked Tim _________________________________________________________ 32. Is it alright if I take a photograph ?. ->Wouldyou mind________________________________________________________ 33. They built a new church near my house last month. ->Anew church __________________________________________________________ 34. Mai began learning English 10 years ago. Mai has______________________________________________________ 35. My shoes were made in Viet Nam. They are 15 dollars. My shoes _____________________________________________________________ Giúp em với ạ
16 tháng 8 2021 lúc 16:36
III. Complete the second sentence in such a way that it has the same meaning as the first one. (2 points)1. Clement Clarke Moore wrote the poem in 1823.- The poem……………………………………………………2. We are waiting for the school bus, said the children.- The children said ....................................................................3. Roses cant possibly grow in such poor ground.- It is impossible .......................................................................4. The last time I played tennis was...
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III. Complete the second sentence in such a way that it has the same meaning as the first one. (2 points)
1. Clement Clarke Moore wrote the poem in 1823.
-> The poem……………………………………………………
2. "We are waiting for the school bus", said the children.
-> The children said ....................................................................
3. Roses can't possibly grow in such poor ground.
-> It is impossible .......................................................................
4. The last time I played tennis was in 1990.
->I haven't....................................................................................
Rewrite each of the following sentences so that it has the same meaning as the first one. 37. You shouldnt drink too much coffee in the evening.àYou ought_____________________38.To watch clips on Tiktok gives us pleasure.à We enjoy _____________________ 39. If you don’t get up early, you will go to school late.à Unless _________________________40. Duong was very busy; however, she spent the whole day at the Lim festival. àAlthough Duong _______________________________________________________
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Rewrite each of the following sentences so that it has the same meaning as the first one.
37. You shouldn't drink too much coffee in the evening.
àYou ought_____________________
38.To watch clips on Tiktok gives us pleasure.
à We enjoy _____________________
39. If you don’t get up early, you will go to school late.
à Unless _________________________
40. Duong was very busy; however, she spent the whole day at the Lim festival.
àAlthough Duong _______________________________________________________
A university professor in the Southwest tells of a student who went on a one-day trip to the Grand Canyon. She didn’t return until a week later. When asked what had happened, she answered that the Grand Canyon was so amazing that she had needed three days just to get used to it.The Grand Canyon was formed by the mighty Colorado River cutting into a plateau in Arizona. The canyon is 277 miles long and about 1 mile deep. Because it is so deep, the top and the bottom have very different weather and...
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A university professor in the Southwest tells of a student who went on a one-day trip to the Grand Canyon. She didn’t return until a week later. When asked what had happened, she answered that the Grand Canyon was so amazing that she had needed three days just to get used to it.
The Grand Canyon was formed by the mighty Colorado River cutting into a plateau in Arizona. The canyon is 277 miles long and about 1 mile deep. Because it is so deep, the top and the bottom have very different weather and vegetation. Going from the top to the bottom is somewhat like going from Canada to Mexico.
Known as one of the seven tourist travel wonders, which include the Great Wall of China, the Taj Mahal, and Machu Picchu, it is visited by millions of people each year.
21. What does the word ‘it’ in line 4 refer to?
A the trip B. The Grand Canyon C. The Colorado River
22. How deep is the Grand Canyon?
A. 277 miles B. 278 miles C. about 1 mile
23. What does the word ‘wonder’ in line 9 mean?
A. Something that makes you surprised or admirable
B. A place in a desert that has trees and water.
C. A thing that is built to help people remember a person.
24. Why do the Grand Canyon’s top and bottom have different weather and vegetation?
A. Because it is so long. B. Because it is so deep. C. Because it is so wide.
25. Which of the following could be the best title of the passage?
A. The seven tourist travel wonders
B. The Grand Canyon
C. The story of a student
( Mn giúp mik giải bài này trong tối nay ạ )
The fabric store has three fabric sheets with total 108 meters in length. After selling 1/2 of the first sheet, 2/3 of the second and 3/4 of the third, the lengths of three sheets are squal. Calculate the length of its sides
II.Complete the second sentence so that it has similar meaning to the first one.1. We haven’t seen each other for over two years.ð The last time…………………………2. They have planted a lot of green trees this yearðA lot of green trees……………………3. May I borrow your dictionary?ð Would you mind ……………………4. “We are decorating our Christmas tree now”, Hoa said.ð Hoa said…………………………..…....5. The water was so cold that the children couldn’t swim in itð The water was not ……………6. She is not only a teacher, she is al...
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II.Complete the second sentence so that it has similar meaning to the first one.
1. We haven’t seen each other for over two years.
ð The last time…………………………
2. They have planted a lot of green trees this year
ðA lot of green trees……………………
3. May I borrow your dictionary?
ð Would you mind ……………………
4. “We are decorating our Christmas tree now”, Hoa said.
ð Hoa said…………………………..…....
5. The water was so cold that the children couldn’t swim in it
ð The water was not ……………
6. She is not only a teacher, she is also a singer
ð Not only ………………………………
7. “Don’t swim out too far, boys” The security said
ðThe security warned the……………
8. She studies English so that she can improve her knowledge.
ð She studies English so as………………
9. You should take more exercises to keep fit and stay healthy.
ð You had ………………………
10. We’d prefer you not to smoke.
ð We’d rather …………….……………
2 tháng 9 2021 lúc 8:41
1. The Internet has helped students study more__________. (effective)
2. You are invited to view one of our autumn__________. (collect)
3. They are discussing the causes of air__________. (pollute)
4. Covid-19 has had__________ consequences for the economy. (disaster)
Change the following sentences into the passive voice.1. They performed Christmas songs for people in town. -- Christmas songs............2. Santa Claus gave children presents on Christmas Eve. -- Children...........3. Ba invented Liz to the rice- cooking festival. -- Liz...........4.They held the festiival in the communal house yard. -- The festival...........5. We paint our house every three years. -- Our house...........6. The boy knew that they were praising him.-- They..........7. No one ha...
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Change the following sentences into the passive voice.
1. They performed Christmas songs for people in town. -- Christmas songs............
2. Santa Claus gave children presents on Christmas Eve. -- Children...........
3. Ba invented Liz to the rice- cooking festival. -- Liz...........
4.They held the festiival in the communal house yard. -- The festival...........
5. We paint our house every three years. -- Our house...........
6. The boy knew that they were praising him.-- They..........
7. No one has ever asked me that question before. -- I.............
8. The council leader awarded the first prize to the Mekong team. -- The first prize.........