题干
根据首字母拼写单词，完成短文。
On TV we can see elephants, m____, dogs, bears or other animals doing a lot of things for us. For example, elephants can carry things, dogs can look a____ houses and lead blind people to cross streets. If we watch more c____, we can find those animals always get a little food to eat after they have done something. So scientists say many d____ animals may learn to do more easy w____ for us if they know they will get something to eat.
答案(点此获取答案解析）
monkeys,after,carefully,different,work
