Một chiếc khăn trải bàn hình chữ nhật có chiều dài 2m và chiều rộng 1,5m. Ở giữa khăn người ta thêu họa tiết họa tiết hình thoi có các đường chéo bằng chiều dài và chiều rộng của hình chữ nhật. tính diện tích khăn trải bàn và diện tích hình thoi.

VEnglish học hay lắm bạn

Living in the countryside has a lot of advantages, but also many disadvantages. As the advantage we can consider the fact that the country is less polluted and the traffic isn't so heavy. You are fit and you don't need to worry about your health condition, because in the countryside the air and water are so clean. In the country there are many plant species. There aren't any huge blocks of flats, modern skyscrapers or bothersome traffic jams. In the country you are free to admire the breathtaking landscapes such as huge meadows, peaceful hills or forests. You can enjoy walking in the forest and picking mushrooms or hunting. Another advantage is that you may easily build a big house and the garden, because charges for ground are much lower than in the suburbs. Moreover, living in the countryside is cheaper than it is in the city, so you probably may afford many other things, because the prices are lower. What is more, you can invite your friends to the barbecue organized in your garden. It would be great! The other positive side is the safety. In the rural area the crime rate is much lower. There aren't a lot of housebreaks and the possibility of burglary is also lower. In the countryside people usually and keep eyes on neighbour's estates. They always react when something strange is happening. Country life is very peaceful and silent. You will enjoy the feeling of peace.

However, there are a lot of positive aspects of living in the country side, there are also some disadvantages. Living in the country is slower. People don't need to hurry and have a lot of time. People in the country don't have to work so many hours as they do in the city. On the other hand, they don't earn so much money. Moreover, there aren't such interesting things to do during free time. The unemployment rate is also much higher than in the city. The problem may be also the communication. If you don't have your own car, you may have problem how to commute to work. The same problem concerns the access to the hospitals, schools, police stations and shops, which are usually located far from the village. Last of all, there are some dangers connected with country life such as heavy snowfall or rainfall.

To sum up, I think that living in the country may have a lot of advantages such as fresh air, breathtaking landscapes and comfort, but a lot of people decide to stay in the city, due to the fact that the life in the town is easier. The easy access to shops and other institutions are the great advantage.

am wearing/ have/ hurts/ have used/ haven't improved

made/bought/was/earned

1. They learn English all over the word

->English is learned all all over the word

2. You must do this work right now

->this work must be done right now

3. She sold her house last year

-> her house was sold by her last year.

4. He always finished his exercises on time

-> his exercises was always finished on time

5. This body broke my window last night

-> my window was broken by this body last night

6. We will meet him at the airport

-> he will be met at the airport

7. They have known him well

->he has been known well

8. They don't plant rice in that country

->rice isn't planted in that country

Hình như bn viết sai đề câu 7, mk sửa lại rồi nhé, chỗ in nghiêng ấy

1,of

2,by

3,in

4,at

5,in

6,of

7,for

8,on

Bộ phận nào sau đây dao động khi cái trống phát ra âm thanh:

A. Mặt trống

B. Dùi trống

C. Bàn tay

D. Vỏ trống