Pre-Test

I saw the smoke coming out of countless factories and the houses near the factory were few with The crowded car near the house, I think is the width of the place because the factory has space. Wider than the house next to the factory, some factories emit innumerable and toxic gases, and that gas can affect people in that area. This makes the blood acidic and stimulates the respiratory system to breathe faster, thus making the heart beat faster. I think they may be at risk of many diseases and their impact on daily life.