trên bãi đỗ xe có số xe đạp là:

50: 1/4=200 (xe đạp )

đáp số : 200 xe đạp

1 I think robots can't replace the role of teachers in education

2 People will still send letters to each other in 2050

Natural disasters are one of the biggest problems that Vietnamese must face to face nowadays. One of the most common natural disaster in Vietnam is flood. The flood can cause damage to houses and peoples. A lot of people lose homes and property. Not only that, they also suffer the pain of losing their relatives and their friends. After understanding the bad effects of hurricanes, there are some solutions to prevent the flood. Firstly, you should always update the news about the hurricanes and floods. Secondly, you should prepare things such as water, food, clothes, medicines, emergency kit, ...Thirdly, we should reinforce our house and always be ready to evacuate. In conclusion, I can say that natural disasters are extremely dangerous, but we can prevent them by doing what I say.

Question 1:

He asked the villagers how often did earthquake occur in that region

Question 2:

they told me that I could found a wide range of beauty products in their store

chạy đi gọi người tới

=1800

• Chiều dài quãng đường  :  150km
• Vận tốc xe 1 ( ):  60km/h
• Vận tốc xe 2 ( ):  50km/h

1. Đổi sang giờ: 1 ngày có 24 giờ, nên 0,5 ngày =   giờ.
2. Đổi sang phút: 1 giờ có 60 phút, nên 12 giờ =   phút.
3. Đổi sang giây: 1 phút có 60 giây, nên 720 phút =   giây. 

21 con ran

có