Although the growth in Canada s population has slowed down by 1966（the increase in the first half of the 1960 s was only nine percent）。 Another large population wave was coming over the horizon. It would be composed of the children of the children who were born during the period of the high birth rate prior to 1957.

　　10. What does the passage mainly discuss？

　　（A） Educational changes in Canadian society.

　　（B） Canada during the Second World War

　　（C） Population trends in postwar Canada

　　（D） Standards of living in Canada

　　11. According to the passage， when did Canada s baby boom begin？

　　（A） In the decade after 1911

　　（B） After 1945

　　（C） During the depression of the 1930 s

　　（D） In 1966

　　12. The word "five" in line 4 refers to

　　（A） Canadians

　　（B） Years

　　（C） Decades

　　（D） Marriages

　　13. The word "surging" in line 5 is closest in meaning to

　　（A） new

　　（B） extra

　　（C） accelerating

　　（D） surprising

　　14. The author suggests that in Canada during the 1950 s

　　（A） the urban population decreased rapidly

　　（B） fewer people married

　　（C） economic conditions were poor

　　（D） the birth rate was very high

　　15. The word "trend" in line 15 is closest in meaning to

　　（A） tendency

　　（B） aim

　　（C） growth

　　（D） directive