Danh mục: Reading Part 4

PASSAGE 4 — Questions 31-40 Anyone who has handled a fossilized bone knows that j is usually not exactly like its modern counterpart, the most obvious difference being that it is often much heavier. Fossils often have the quality of stone rather than organic materials, and this has led to the use of the term… Continue reading Reading 3 Part 4

PASSAGE 4 — Questions 34-40 Potash (the old name for potassium carbonate) is one of the two alkalis (the other being soda, sodium carbonate) that were used from remote antiquity in the making of glass, and from the early Middle Ages in the making of soap: the former being the product of heating a mixture… Continue reading Reading 2 Part 4