1 . As a zoologist, he has been dedicated to o_________ all kinds of animals, which enabled him to know their behaviors and living habits. （根据首字母单词拼写）

2 . Modern education stresses more on c_________ creative minds, exploring the truth and developing sympathy for and understanding of mankind. (根据首字母单词拼写)

3 . He still remembers the horror of being c________ by a dog on his way to school, which explains why he doesn’t like dogs now. (根据首字母单词拼写)

4 . As the most brilliant detective, Sherlock Holmes is good at h________ very complicated (复杂的) criminal cases. (根据首字母单词拼写)