1．A stack of ________ (档案) awaited me on the desk.
答案：files
2．Some scientists observe wildlife in the ________ (自然的) environment.
答案：natural
3．I forced my fingers to ________ (按，压) the button and took a photo of the wonderful scene.
答案：press
4．After all, we are also members of the world, so we should show ________ (尊敬) for all animals.
答案：respect
5．I enjoy working with animals and learn about the ________ (性格，个性) of a few around us.
答案：character
6．The p________ led up a steep hill.
答案：path
