Problem analysis: examine prepositions: different is an intransitive verb, different from and different in ... two animals have the same value, but their body shapes and reproductive habits are different. Choose C.

Comments: To solve this kind of questions, we must first understand the meaning of the stem, and then know the meaning of each option. Then, like method of substitution in mathematics, it is not difficult to compare the meanings of each option in turn and choose the correct answer. The key is to accumulate more, summarize more and remember more in the usual learning process. This is a good method.