"I am sorry I can't come into work today. My back ....... out on the weekend when I was hauling bags of*^*concrete. I can't get out of bed," Mark said to his boss. A.left B.gave C.racked D.rose Answer and Feedback Answer:B do you want? view more test Xem thêm Share this post Some other questions you may be interested in. Sugar is a major reason for tooth decay. Due to the high content of sugar in most carbonated drinks, you can diminish the risk of tooth decay by sipping through a straw. Fruit juices cause about as much harm to your teeth as Colas do. Despite its natural origins, this food is particularly bad for your teeth; it is sticky and contains concentrated fruit sugar. This substance is a substitute for sugar that can help prevent tooth decay. It decreases plaque formation and blocks the bacteria from producing the acids that cause cavities. This substance is naturally present in water. It keeps the enamel strong and can stop or even reverse the process of tooth decay. You might not be successful at exterminating microbes - they have been around this long. Bacteria consist of this number of cells. People use a kind of microbe to make this. Of all the microbes on Earth, only about this many have been identified. Lactic acid bacteria help achieve this.
