阅读理解 I always avoid going on field investigations with the toxics ( 毒物)team, unless it’s absolutely necessary. It’s not that I mind the hard work, or am afraid ing into contact with toxic substances. What I fear is qui ckly losing hope about the work I do. However, doing field research with the toxics team, allI see and feel is filth — nothing else. Even ifI close my eyes, I can smell the smell of food processing, anic waste from paper mills and chemicals from clothing manufacturers. One morning, I went to investigate a discharged pipe to document and collect samples of pollutants secretly being emitted bya textile mill. I had to work with the utmost secrecy in order to avoid being discovered by the textile mill. I dipped a long measuring pole into the large polluting pipe to measure the volume of polluted water being emitted. But the surface of the water, covered in oil and filth, made me feel as if to vomit. All ofa sudden, I felt someone hit me on my back. It frightened me so much that I almost fell into the water. I grasped the pole and looked behind me to see an old man standing there. He asked: “ Can you catch fish here? ”I realized that he thought I was holding a fishing pole, soI kept calm and said: “ Yes, I heard that there ’sa kind of small fish living in this water, and it has medicinal benefits. ” The old man grew quite curious and replied: “ That may be. Ifa fish c