單項(xiàng)選擇題

A major source of population growth is（）

A.immigration　
B.baby boom
C.rising birth rate　
D.larger number of young people

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單項(xiàng)選擇題

The annual population growth rate of the 1990s was （）

A.1%
B.0.9%
C.over 1%
D.under 1%

單項(xiàng)選擇題

In（）each year the National Film Theatre hosts the London Film Fes-tival,at which some 250 new films from all over the world are screened.

A.September
B.October
C.November
D.December