Bài này hơi ngắn so với yêu cầu, bạn thông cảm

Nowadays, the development of human world causes causes many bad effects to the environment. We throw garbage everywhere, exploit too much natural resources or contaminate the air. Therefore, our environment is being seriously polluted and we need to protect it from now. First of all, we should reduce, reuse and recycle. Instead of using plas bags, we can use leaves to wrap food. We can recycle plas bottles, cans, paper to reduce garbage. Using public transports and decreasing the number of motorbikes and cars are also good ways to reduce carbonic in the air. Besides, we should purify contaminated lakes or rivers in order to lessen the pollution in the water.Last but not least, the gorvernment should propagandize about protecting the environment to everybody so that they can aware of it. Especially, we need to punish people who contaminate the environment with great severity. In conclusion, the Earth is our home so protecting it is everyone's responsibility.

cảm ơn DI VÀ IDID nha

Five years ago, I attended a very big festival in Ha Noi. It’s called 1000th Anniversary of Thang Long – Ha Noi Festival. There are a lot of activities in this festival such as fireworks display, military parade, music performances, ect. It was organized very splendidly because the organizers are the Viet Nam government. Millions of people came to Ha Noi to participate in this great festival. It was held for ten days from October 1st 2015 to October 10th 2015. I saw lots of fireworks, parties, parades during these days. It was interesting. I took so many pictures on this festival because there were plenty of beautiful scenes. We organized this great festival to celebrate the 1000th anniversary of Thang Long – Ha Noi.

March 15th

Dear Minh and Lien,

We're having a great time here on Phu Quoc island!

The weather been sunny.the beaches are so clean with the blue sea and white sand.The hotel and food are great.The local people are very friendly.Ly's taken many photos with them.We've gone for a swim all day and had a BBQ dinner  with full of seafood on the beach.

Tomorrow we'll join a scuba-diving tour to explore the colorful coral reefs.We're so excited about this!

I wish you were here!

With love,

###Mây###

I've always been captivated by the ethereal sounds of the Celtic harp. Its elegant frame, adorned with strings that seem to whisper tales of ancient lands, draws me in. The thought of plucking those strings and coaxing out melodies that resonate with centuries of tradition fills me with a sense of enchantment. The harp's graceful curves and the way its strings resonate to create hauntingly beautiful music evoke a sense of magic and tranquility. Learning to play the Celtic harp feels like embarking on a journey through time, exploring melodies that echo the soul of folklore and tradition, while also allowing for personal expression and creativity. The instrument's timeless allure and its ability to evoke emotions through its melodic resonance make it a captivating choice for me to explore and master.

a: Xét ΔABM và ΔDBM có

BA=BD

\(\widehat{ABM}=\widehat{DBM}\)

BM chung

Do đó: ΔABM=ΔDBM

b: Ta có: ΔABM=ΔDBM

nên \(\widehat{BAM}=\widehat{BDM}=90^0\)

c: Ta có: BA=BD

nên ΔBAD cân tại B

mà BM là đường phân giác

nên BM là đường cao

d: Ta có: ΔABM=ΔDBM

nên MA=MD

Ta có: BA=BD

nên B nằm trên đường trung trực của AD(1)

Ta có: MA=MD

nên M nằm trên đường trung trực của AD(2)

Từ (1) và (2) suy ra BM là đường trung trực của AD

hay BM⊥AD

My dream house is hi tech house by the sea with many sands and water surroundings. There will have 10 large rooms and it will plant many green trees, flowers and have big swimming pool in the garden. In each rooms, it will have a super smart TV, a super smart car, high-tech robot. the super smart TV will help me surf the Internet, send and receive my email, order food from the supermarket and contact my friends on other planets. High-tech robot will clean the floors, cook the meals, wash the clothes, water the flowers and feed the dogs and cats.

I want to build a dream house with a garden where I can grow my fruits and vegetables.

I want a spacious living room with four other rooms which can be used as bedrooms and a study room. One bedroom will be there for my grandparents and the other one for my parents.

My bedroom must have a very comfortable bed where I can relax. It would also be nice to have a PlayStation in my room. My room should be brightly colored, and on the walls, my favorite cartoon characters should be drawn.

For the living room, there must be a giant television where we can watch movies together. I also wish to have a pet cat or a pet dog, so there must be an area for them in my dream house.

Overall, my dream house is a house where my family, along with my pets, and I can live happily.

 Mistake

When I was 5 years old, my father bought me a mini bicycle. He said that he would teach me how to ride a bicycle the week after. But I liked this bicycle so much, and I couldn't stand waiting until next week. So the day after, when my father was not there in the house for some reasons, I tried to ride it myself. Since I used to look at my father riding a bicycle, I would feel that it was so easy to drive it that it would hardly take a minute for me to start it and then I would be riding it on my way to my grandparents' home showing him that I could also ride the bike without being taught. But it was not easy as I thought. I fell off the bike and injured my leg. The bike was also broken. Then I was taken to the hospital. The whole incident was a big lesson for me that I should not touch upon something of which I do not have prior knowledge and that I should obey my parents since whatever they say is just for my well-being only.

For every Vietnamese, we certainly cannot forget a historical event that ended more than a thousand years of domination by the enemy of the North. It was a victory on Bach Dang River in 938, led by Ngo Quyen to defeat the South Han army. In 937, Duong Dinh Nghe was killed by Kieu Cong Tien. After that, Ngo Quyen gathered forces to the North to kill Kieu Cong Tien. Kieu Cong Tien sent people to China to pray for help in the Nan Han Dynasty. In 938, Ngo Quyen went to the North to kill Kieu Cong Tien, preparing to fight the enemy. Realizing the special tide on the Bach Dang River, Ngo Quyen had his troops piled on both sides of the river, and waited for the enemy's arrival. With his ingenuity, Ngo Quyen directed his troops to defeat the Nam Han, ended more than 1000 years of domination by the Northern enemy. That victory is really meaningful. Every time I remember, I feel proud of our country's glorious victory. Up to now, Bach Dang River still has traces of piles on the banks of the river. Although our people have many other victories, for me it is an historical event that I cannot forget.