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1．Which of the following does NOT affect population growth in a country?

      A．Immigration and emigration.                 B．Natural disasters and famine.

       C．Grown-ups and small children.              D．Health care and family plans.

2．“Birth and death rates” is the difference between birth and death numbers       .

       A．in one-minute time                               B．in a certain hospital

       C．in a certain family                                D．in 1,000 people

3．In what way do wars affect population?

       A．Many people are killed violently.            B．Population falls because no child is born

       C．No one is left after a bloody murder       D．Many people are washed away by flood.

4．Which of the following is an immigrant?

      A．Jack has found a job in France and he will stay in France for two years.

       B．Lee’s family will stay in Australia forever because they have got its citizenship.

       C．Mary Lin will join her husband in USA, who is a visiting professor in a college.

       D．David majors in math and right now he is studying I. E. in UIUC in USA.