chu vi hinh vuong 

       a * 4 = p  trong do a la do dai mot canh

dien tich hinh chu nhat

       a * h = s trong do a la chieu dai h la chieu rong 

nho tich cho minh nhe

Rewrite sentences without changing the meaning

It’s required that you have to follow netiquettes in this chat room.

A.You must follow netiquettes in this chat room.

B. You need follow netiquettes in this chat room.

C. You can follow netiquettes in this chat room.

D. You should follow netiquettes in this chat room.

+ Lá cây xương rồng có đặc điểm biến thành gai.

+ Do môi trường sống của xương rồng rất khắc nghiệt nên lá xương rồng biến đổi thành gai để thích nghi với môi trường và cũng là để giữ nước cho cây .

+ Lá chét ở cây đậu Hà Lan biến đổi thành tua cuốn
Lá ngọn của cây mây biến đổi thành tay móc .
+ Lá biến thành tua cuốn hay tay móc giúp cây bám để leo lên cao .

+ Lá phủ trên thân rễ là vảy mỏng có màu nâu nhạt.

+ Nó giúp che chở cho các chồi của thân rễ.

+ Bẹ lá phình to thành vảy dày, màu trắng chứa chất dự trữ cho cây .

Lịch sự là cử chỉ , hành vi dùng trong giao tiếp ứng xử phù hợp với quy định của xã hội , thể hiện truyền thống đạo đức của dân tộc .

Tế nhị là sự khéo léo sử dụng những cử chỉ , ngôn ngữ trong giao tiếp ứng xử , thể hiện là con người có hiểu biết , có văn hóa

Lịch sự , tế nhị trong giao tiếp ứng xử thể hiện trình độ văn hóa đạo đức của mỗi người

Everybody loves holidays because during our holidays we can relax and have fun. We get enough time to travel, play our favorite sports and practice our hobbies. My Favorite holiday is Last Holiday. Below I will tell you about my last holiday. I had always dreamed about going to Quan Ninh and near places. As soon as we reached there after a long journey, I was stunned by the beautiful scenic views that I only saw in pictures. I was totally lost in the scenic views that I forgot to blink my eyes. We stayed in the 5-star hotel in front of the beach. Next day, we hired a boat for a trip to see small islands. It was simply amazing.We swam all day and return our Hotel. Following day we hired a car and saw historical place, visited museum and doing shopping. It was a beautiful and excited.The holiday was a perfect. We did so many activities which included Swimming, Football, Scuba diving, Boat trip,Visiting museum, Paragliding etc. We also watched the sunrise of BBB summit, it was very romantic. It was the most amazing and spectacular experience of my life that I was stunned by God’s creation of a heaven-like place on earth. Our journey ended on 4th of August. On our way back we traveled by bus again. During the trip I thought, ‘Those days were amazing and unforgettable, I wished if I had more days to spend over there’. My holiday was exciting and full of joy. I enjoyed it immensely. I am looking forward to going there again soon.

Almost people say that they prefer living in the peaceful countryside to the noisy city. I agree with them but I can't admit it when I live here-my second hometown-Thai Nguyen. Although Thai Nguyen is now a city but it's very peaceful and comfortable. I can hardly hear any loud noise and you know, to me, the most peaceful place is my neighborhood.

My family and my neighbors live together on Phan Dinh Phung Street. Every morning when I get up, I always can see the sun shining and there are some warm voices from the small beautiful birds and the sounds from my neighborhood. We all get up very early. A new day begins. I often wander around my neighborhood. There are lots of green trees along the streets. There, we can see a range of houses from high to short, ordinary to extraordinary. We all do business. Some neighbors sell foods, drinks and household appliances as grocery stores. Some are tailors who mend clothes, make clothes and mend shoes too. Some are the barbers who cut hair and give make up like my mother. Some are bakers who bake cakes in the bakery and sell breads. The environment is never polluted and we can feel the warm atmosphere everytime.

All the inhabitants in my neighbor are very friendly to each other. Whenever a person needs help, the others are always ready to give help and one thing should be mostly appreciated is that they never mind how difficult the work is. And we build such a great consolidation. When a neighbor has just returned from a trip, they always remember to buy the others some beautiful and worthy gifts and we also share the money for parties together. We never underestimate the honor we give each other.

I love my neighborhood very much. I hope that our friendliness and consolidation will last forever and remain unchanged.

Phát âm là /s/ khi tận cùng từ bằng p,k,t,th,f ( cách nhớ : Phải kính fục tôi thôi )

Phát âm /iz/ khi tận cùng bằng :

Phát âm /z/ khi tận cùng bằng những từ còn lại

Hello, my name _is_ Nam. I'm twelve and I'm _a_ student. I _have_ a sister, Nga. She is __an_ engineer. She's twenty-five. We live _in__ a house in the country. Our house _has__ a beautiful yard. There _are__ flowers and plants in the yard.

1l dầu nặng số kg là

4,94:6,5=0,76 kg

vậy 3,8kg thì có số l dầu là

3,8:0,76=5