题目内容：

    Wildlife has been greatly threatened in the modern age. There are species(物种) that are _______ every day. The white-naped crane is a typical example. So scientists are trying their best to _______ the species from going out of existence.

Chris and Tim work at a zoo, helping endangered cranes with their _______. Emma, a female crane, has been in their _______ since she arrived in 2004.

Born at an international crane foundation, Emma was _______ by human caretakers. This led to an unexpected _______, though she had a wonderful time there. Emma had _______ taken herself as a crane and become deeply attached to humans. She _______ to live with male cranes, and even had a _______ for killing some of them, which made it ________ for her to become a mother.

________, the two zookeepers didn’t want to see the extinction(灭绝) of this precious species. With their patience and efforts, they successfully developed a ________ of artificial breeding(人工繁殖) and natural reproduction. This ________ Emma to give birth to five baby cranes.

The two keepers are proud of their productive work. But before they can be ________, more efforts must be made, because the population of the crane in the wild is on the ________, and many other species appear headed toward extinction. ________, not everyone has realized that wildlife has thoughts, feelings, and most importantly, equal rights to survive.

How can we ________ the ever-widening gap that separates us from other animals? Chris and Tim offered us the ________: human beings took it for granted that their ________ held all the solutions, but maybe their hearts can be a better ________.

1.A.growing B.migrating C.competing D.disappearing

2.A.ban B.save C.split D.remove

3.A.abortion B.recreation C.reproduction D.administration

4.A.care B.eye C.mind D.story

5.A.found B.chosen C.raised D.seized

6.A.bonus B.consequence C.victory D.sacrifice

7.A.never B.always C.unluckily D.cheerfully

8.A.liked B.refused C.decided D.hesitated

9.A.gift B.skill C.concern D.reputation

10.A.illegal B.inspiring C.important D.impossible

11.A.Therefore B.Moreover C.However D.Instead

12.A.combination B.collection C.strategy D.system

13.A.forced B.forbade C.taught D.enabled

14.A.defeated B.grateful C.assured D.tolerant

15.A.list B.rise C.agenda D.decline

16.A.In contrast B.After all C.By the way D.On the contrary

17.A.leave B.bridge C.open D.identify

18.A.course B.excuse C.answer D.reward

19.A.brains B.behaviors C.services D.projects

20.A.guide B.treat C.example D.companion