题目内容：
根据材料，回答问题。Fallev worked for the Canadian government．One day，he was___16___ to learn more about wolves．Do wolves killlots of caribou(北美驯鹿)?Do they kill people?
They gave him lots of food and clothes and guns．Then they put him on a plane and took him to___ 17___．The plane put him down and went away．There were no houses or people in this place.Bul there were lots of animals and lots of wolves．
People tell terrible stories about wolves．They say wolves like to kill and eat people.Fadey remembered these stories，and he was___ 18___．He had his gun with him___ 19___ ．
Then one day，he saw a group of wolves．There was a mother wolf with four baby wolves．A father wolf and another young wolf rived with them．
Farley watched these wolves every day．The mother was a very___ 20___ mother．She gave milk to her babies．She gave them lessons about life．They learned how to___ 21___ food．The father wolf got food for the mother．The young wolf___ 22___ the children．They were a nice，happy family-wolf family! Farley did not need his___ 23___any more．In a shon time，he got on well with the family． Farley watched them for five months．He learned that many stories about the wolves were___24___． Wolves do not eat people，and they do not eat many large animals．And he also learned bad things about men．It was men who killed many caribou and wolves．
Later，Farley wrote a book about wolves．He wanted people to___ 25___them and not to kill them．
16． A．seen
B．told
C．heard
D．found
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