IELTS Academic Reading Passage – The Risks of Cigarette Smoke
You should spend about 20 minutes on Questions 15-28 which are based on the Reading Passage below. The Risks of Cigarette Smoke Discovered in the early 1800s and named nicotianine, the oily essence now called nicotine is the main active ingredient of tobacco. Nicotine, however, is only a small component of cigarette smoke, which contains more than 4,700 chemical …
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