IELTS Reading Practice - Water Filter | Trí Đức English TRÍ ĐỨC ENGLISH Hệ Thống Luyện Thi IELTS Chất Lượng Cao Chủ đề: IELTS Reading Passage 3 - Water Filter (Day 4) 📖 Lý Thuyết & Phương Pháp Làm Bài Reading 1. Dạng bài Information Matching (Questions 27–33) Mục tiêu: Xác định đoạn văn (A–F) nào chứa thông tin được mô tả trong từng câu hỏi. Chiến thuật: Lưu ý gợi ý "NB You may use any letter more than once" (Một đoạn có thể trả lời cho nhiều câu hỏi). Đọc kỹ câu hỏi, tìm từ khóa chính (Keywords) và dạng Paraphrase (từ đồng nghĩa/cách diễn đạt tương đương) trong các đoạn văn. 2. Dạng bài TRUE / FALSE / NOT GIVEN (Questions 34–40) TRUE: Thông tin câu hỏi hoàn toàn trùng khớp với thông tin trong bài đọc. FALSE: Thông tin câu hỏi mâu thuẫn hoặc trái ngược trực tiếp với thông tin trong bài đọc. NOT GIVEN: Bài đọc không đề cập hoặc không đủ thông tin để xác định nhận định đúng hay sai. 📄 READING PASSAGE 3 Water Filter An ingenious invention is set to bring clean water to the third world and while the science may be cutting edge, the materials are extremely down to earth. A Tony Flynn, a materials scientist from Australian National University (ANU), developed a simple new way of making water filters with commonly available materials, and these water filters can be fired on the ground using cow manure as a source of heat, without the need for a kiln. The filters have proved the ability to remove common pathogens (disease-producing organisms) such as E-coli. Unlike other water filtering devices, these filters are simple and inexpensive to make. "They are very simple to explain and demonstrate and can be made by anyone, anywhere," says Flynn. "They don't require any advanced technology. All you need is terracotta clay, a compliant cow, and a match." B The production of the filters is extremely simple: take a handful of dry, crushed clay and mix it with a kind of organic material such as used tea leaves, coffee grounds, or rice hulls, and add enough water to make a stiff biscuit-like mixture and form a cylindrical pot with one end closed, and let it dry in the sun. According to Flynn, used coffee grounds have given the best result to date. Next, surround the post with straw, placing them in a pile of cow manure. Then light the straw and top up the burning manure as required. In less than an hour, the filters are ready. The walls of the finished pot should have the thickness similar to that of an adult index finger. The properties of cow manure are vital as the fuel can reach a temperature of 700 degrees and abov...