Questions 19 to 21 are based on the conversation you have just heard.

单项选择题A．It limited their supply of food.B．It made their eggshells too fragile.C．It destroyed many of their nests.D．It killed many baby bald eagles.

单项选择题A．One of the bridges between North and South London collapsed.B．The heart of London was flooded.C．An emergency exercise was conducted.D．A hundred people in the suburbs were drowned.

单项选择题A．She will do her best if the job is worth doing.B．She prefers a life of continued exploration.C．She will stick to the job if the pay is good.D．She doesn’t think much of job-hopping.

单项选择题A．The latest developments of an armed rebellion in Karnak.B．The fall of Karnak’s capital city into the hands of the rebel forces.C．The epidemic that has just broken out in the country of Karnak.D．The peace talks between the rebels and the government in Karnak.

单项选择题A．To interview a few job applicants.B．To fill a vacancy in the company.C．To advertise for a junior sales manager.D．To apply for a job in a major newspaper.