=>

1. D (Stamp collecting is an interesting hobby. You can learn many things, such as the geography of a country...in the world)

2. C (Postal stamps are a source of interesting facts and important dates about every country in the world./Their colours can make you feel relaxed and happy./Collecting stamps can become a business...pleasure)

3. C (Collecting stamps can become a business...pleasure)

4. D (Collecting stamps can become a business. If you are lucky in finding a special stamp, it will bring you some money besides knowledge and pleasure)

5. B (Stamp collecting is an interesting hobby....pleasure)

1) D. A and B are correct

Thông tin: Stamp collecting is an interesting hobby. You can learn many things, such as the geography of a country from stamps. Postal stamps are a source of interesting facts and important dates about every country in the world.

2) C. stamp collecting can make you famous

Thông tin: 

+) Their colours can make you feel relaxed and happy.(câu A đúng nên loại)

+) Postal stamps are a source of interesting facts and important dates about every country in the world.(câu b đúng nên loại)

+) Collecting stamps can become a business. If you are lucky in finding a special stamp, it will bring you some money besides knowledge and pleasure.(câu D đúng nên loại)

=> Vậy đáp án là C

3) C. stamp collectors can earn a lot of money from stamp collecting

Thông tin: Collecting stamps can become a business. If you are lucky in finding a special stamp, it will bring you some money besides knowledge and pleasure.

Tạm dịch: Thu thập tem có thể trở thành một công việc kinh doanh. Nếu bạn may mắn tìm thấy một con tem đặc biệt, nó sẽ mang lại cho bạn một số tiền bên cạnh kiến ​​thức và niềm vui

4) D. the activity of buying or selling something

Thông tin: Collecting stamps can become a business. If you are lucky in finding a special stamp, it will bring you some money besides knowledge and pleasure.

Ở đây từ business nghĩa là: kinh doanh, buôn bán, trao đổi một thứ gì đó

5) B. good things from stamp collecting

Nội dung bao quát của đoạn văn là: Những điều tốt đẹp từ việc sưu tập tem