A mobile phone, also known as a cell phone, is one that we can use to make telephone calls to anyone from a great distance via a radio link. Apart from telephony, modern smart mobile phones also support a number of other services including text messaging, internet access, gaming, photography, and many business applications. The first cell phone weighed about 2 kilograms and was demonstarted in 1973 by Dr. Martin Cooper and John F. Mitchell of Motorola. Ten years later, in 1983, the first model of cell phone went on sale to the public. By 2011, over six billion people, 87% of the world's population, used mobile networks. In spite of the many advantages a cell phone has, it also brings about several problems that users should be awave of. Mobile phone radiation is believed to be harmful to human health. Some recent studies have found an association between cell phone use and certain kinds of brain disease. Another serious problem can be privacy and tracking. Once users have the phone on, they can be interrupted in many ways, and they can also be tracked by location data.                   STATEMENTS     TRUE      FALSE1. A cell phone can"t operate without a radio link   2. A mobile phone can be harmful to users due to its radiation  3. The sound of a mobile phone may cause brain disease   4. A telephone user" s location may be tracted easily   5. A cell phone does not affect user"s privacy by any means   6. The main idea of the passage is to persuade people not to use cell phones            

Có nhiều cách để trả lời câu hỏi trên trong đoạn văn cho trước. Dưới đây là một số phương pháp có thể áp dụng:

Phương pháp 1:
- Đọc đoạn văn và hiểu nội dung chính của nó.
- Đọc từng câu hỏi và so sánh với thông tin đã đọc để xác định câu trả lời đúng hoặc sai.
- Viết lại các câu hỏi và đánh dấu câu trả lời tương ứng là TRUE (đúng) hoặc FALSE (sai).

Phương pháp 2:
- Tìm các từ khóa trong câu hỏi để xác định phần nào của đoạn văn chứa thông tin tương ứng.
- Đọc kỹ phần có chứa thông tin đó và xác định xem thông tin đúng hay sai.
- Viết lại các câu hỏi và đánh dấu câu trả lời tương ứng là TRUE hoặc FALSE.

Câu trả lời cho các câu hỏi trên:

1. A cell phone can't operate without a radio link.
- Trả lời: TRUE

2. A mobile phone can be harmful to users due to its radiation.
- Trả lời: TRUE

3. The sound of a mobile phone may cause brain disease.
- Trả lời: FALSE

4. A telephone user's location may be tracked easily.
- Trả lời: TRUE

5. A cell phone does not affect user's privacy by any means.
- Trả lời: FALSE

6. The main idea of the passage is to persuade people not to use cell phones.
- Trả lời: FALSE

True. A telephone user's location can be tracked easily with the use of location data on a cell phone.

False. The sound of a mobile phone does not cause brain disease. The harmful effects are related to the radiation emitted by the phone.

True. A mobile phone can be harmful to users due to its radiation. Some studies have found an association between cell phone use and certain kinds of brain disease.

False. A cell phone can operate without a radio link. It allows users to make telephone calls from a great distance via a radio link, but it can also function without it for other services like text messaging, internet access, gaming, and photography.