Cho hình vẽ:

Biết: EF song song với GH, EF=GH

1. C/m Tam giác EOF = tam giác GOH

2. C/m HF = 2 OF

Loan: Being able to make a difference in the lives of people is a wonderful thing to me. That’s why I take part in volunteer work. I’ve been a volunteer for over 3 years. Once or two a week, usually on the weekends, I teach English and Math to poor children in Dong Anh District. My friend and I also encourage other people to donate books to them. We also tutor some young children who can’t go to school.

Mai: My family spends one Saturday morning a month to collect rubbish ot planting trees in our neighborhood. We are not fored or paid to do it, but we enjoy it. In our village, most family volunteer to do this once a month. We cook and give food to patients in some hospitals. My parents also donate their blood once or twice a year to help sick people. At the end of each year, people in my village raise money for poor and homeless people. We love helping others.

1.       What is the passage about?

2.       How long has Loan been a volunteer?

3.       What does “tutor” in paragraph 1 mean?

4.       Does Mai’s family collect rubbish or plant trees in her neighbourhood once a month?

5.       What does Mai’s parents annually do to help sick people?

1. My classmates love to play sports after school.

-> My classmates enjoy.....

2. I love collecting coins.

-> My hobby....

3. Last month/we/plant/tree/park.

Nếu dây cắm của chuột và bàn phím máy tính bị hỏng thì phải làm gì mới có thể sử dụng được?

Chọn cụm từ thích hợp điền vào chỗ trống để hoàn thành các câu sau và lấy ví dụ:

\(Bài1:Tính\)

\(\dfrac{A=5^{10}+\left(125\right)^3}{\left(25\right)^4+5^7}\)

\(Bài2:\)\(ChoA=1^2+2^2+3^2+...+10^2\)

\(TínhB=5^2+10^2+15^2+...+50^2\)