We seem to get one food scare after another. Several of these, recently, have concerned genetically modified (GM,转基因) foods. Although some experts tell us that these foods will do us no harm and that the concern about them is just an excuse,What is people's main concern about GM foods?

It is becoming more and more difficult to be sure that the food we eat is not actually harming us. We seem to get one food scare after another. Several of these, recently, have concerned genetically modified (GM,转基因) foods. Although some experts tell us that these foods will do us no harm and that the concern about them is just an excuse, What is people's main concern about GM foods? A. Some of them are not labeled with required information B. They might pose hazards we don't know yet C. They don't have the same flavor as traditional foods D. The sowing of them will damage the environment.