Questions 29 and 30 are based on the following news.At the end of the news item, you will be given 10 seconds to answer the questions. Now, listen to the news.
What can we infer from this news itemA．There are not so many people experience headaches in the worldwide. B．The headache is always temporary and can be cured by aspirin. Chronic headaches make severe pain and can go away but come back soon. D．The experts have already found the cure and help for chronic headaches.
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