单项选择题
A．A doctor's notebook. B．A diary. C．A magazine. D．A school biology book.
A．People are more likely to catch cold in the winter. B．Colds are so common that even the strongest person cannot avoid it. C．Old people are likely to catch cold because they are unpleasant D．Colds can never be cured without the help of medicin
A．to write in an amusing way B．to give general advice C．to complain about his health D．to describe personal experiences