Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
2The air in the city is more polluted than the air in the countryside
3It is very interesting in take boat trip to the Perfume River
The air in the city is more polluted than the air in the countryside
Đặt tích 3 số tự nhiên liên tiếp là A = a.(a+1)(a+2)
Để chứng minh A chia hết cho 2 có 2 trường hợp :
+) Nếu a chia hết cho 2 ( a chẵn ) => A chia hết cho 2
+) Nếu A chia 2 dư 1 ( a lẻ ) => a+1 chia hết cho 2 => A chia hết cho 2
Để chứng minh A chia hết cho 3 có 3 trường hợp :
+) Nếu A chia hết cho 3 => A chia hết cho 3
+) Nếu A chia 3 dư 1 => a+2 chia hết cho 3 => A chia hết cho 3
+) Nếu A chia 3 dư 2 => a+1 chia hết cho 3 => A chia hết cho 3
Mà 2 và 3 là 2 số nguyên tố cùng nhau nên :
A chia hết cho 6 hay 3 số tự nhiên liên tiếp chia hết cho 6
I live in the suburbs of ... (nơi bạn sống). There are many good things about living in my neighbourhood. First, it has beautiful parks, sandy beaches, and sunny weather all year. So, it's very good for outdoor activities and events. Second, the traffic here is also great because the roads are wide and people follow the traffic lights very well. Also, my neighbours are incredibly friendly and helpful. You can make friends with them and ask them for help easily. However, there is one thing I don't like about living here. It's quite inconvenient because if you want to hear some live music or watch a movie at the cinema, you have to catch a bus to the city centre. Despite that, I still love living here.
My neighbourhood is in the suburbs of …(nơi bạn sống)…. city . I like living here because of many interesting things in my neighbourhood . There are many tall buildings and big houses here. My neighbourhood also has many stores,two markets, a post office, a bank , a stadium so it is very convenient for local people . There are many trees and spaces here so the air here is very fresh . In my neighbourhood there is a big flower field with many kinds of flowers, therefore it is very beautiful in the spring. Morever the people here are friendly and helpful with these reasons . The visitors always come to visit my neighbourhood and they want to stay here longer.
Nếu sống ở trung tâm thành phố thì câu đầu là
My neighbourhood is in the centre of …(nơi bạn sống)… city
1;every 5 months
2;every 6 months
3;every 2 week
4;every 4 years
1, every 5 months
2,every 6 months
3,every two weeks
4,every 4 years,
CHÚC BN HỌC TỐT!!!!!
1 living
2 watch
3 between
4 types
5 dining