题干

1986年,江苏大丰麋鹿自然保护区从英国重新引入在我国已经灭绝的麋鹿39只(其中雄性13只、雌性26只)。麋鹿在接下来几年中的数量变化如下表所示,下列相关叙述错误(     )

年份

1987

1988

1989

1990

1991

1992

出生率/%

17.9

27.3

29.6

22.7

24.9

30.2

存活数/只

44

54

66

78

96

122

A:1988年麋鹿种群的死亡率约为4.5%

B:保护区进行麋鹿野生放归,有助于提高麋鹿的遗传多样性

C:1987年到1992年麋鹿的性别比例保持相对稳定

D:麋鹿引入保护区后,种群数量增加的原因是食物空间充足、气候适宜、天敌少

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答案(点此获取答案解析)

C

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完形填空

Juan loved winter more than any other season. He wasn’t sure   26  , but sometimes he thought about it.   27  it was that cold feeling he had, on a snowy night, looking out at the blowing, falling snow, safe and   28   inside with his family. Or maybe it was   29   those mornings when he could play in the snow with his friends. Christmas, his favorite festival anyway, was always even more   30   when the whole world was white.

  Upstate New York was a(n)   31   place to live in. The summer was warm and green. Autumn was a rainbow(彩虹) of colorful leaves.   32   would arrive in a few months and all would be well in Juan’s world.

  One day, Juan’s grandfather said excitedly, “We are   33   to Florida! No more cold, no more snow or ice, and no more winter!”

  Grandmother Marie was also very   34  . She hugged Juan. “Aren’t you excited, Juan?” she asked, trying not to notice his expression.

  “I don’t want to go there at all. I   35   to live here.” Juan cried.

26 A. when            B. where          C. why

27 A. Perhaps          B. Instead         C. Finally

28A. stupid            B. alone          C. comfortable

29 A. because          B. because of       C. instead of

30 A. special           B. boring          C. silly

31 A. awful            B. great           C. dangerous

32 A. Winter           B. Spring          C. Money

33 A. connecting        B. remaining       C. moving

34 A. sad              B. happy          C. worried

35 A. prefer            B. reject          C. agree