I'm 168 ... I made four mistakes, namely carbon cycle or food chain. I saw it originally, but I still haven't changed it. I have some regrets. Although there are original pictures in the book, I personally feel that the explanation is too far-fetched, but the following words are still good, but not correct. It feels biased but absolutely strange, especially for several proofs, the meaning of the title is slightly unclear, and there are several creatures who feel a little confused about what to write, but this time they will be loose. Otherwise, how can we get the average score of Hangzhou 135? The score should be higher than estimated. Isn't this composition more disgusting? Our school generally spits out composition and mathematics. )