Car Fumes can change the Brain in two hours汽车尾气能在两小时内改变大脑

Air pollution2 can change our brain. It changes how parts of our brainconnect3 with other parts. Research shows this can happen in two hours. Aresearcher was surprised by his research. He said，“For many years， scientiststhought the brain may be protected4 from the bad effects5 of air pollution.”Hisstudy showed there was a connection between air pollution and thinking.

The study was on 25 adults. They took in car fumes in a laboratory6.Scientists took brain scans7 of them for two hours. The scans showed that thethinking networks8 in the brain changed. There were fewer connections betweenthe networks.

Another professor9 worried about how traffic10 pollution can change thenetworks in our brain. She said people should close car windows when in traffic.The brains of the 25 people were OK after they took in clean air.

空气污染可以改变我们的大脑。（剩余499字）