对人体友好的益生菌。Did you know that there are some bacteria in our bodies that help us? They are called probiotics (益生菌). These bacteria help us stay healthy.Lactic acid bacteria 乳酸菌There are many lactic ……

probiotics (益生菌). These bacteria help us stay healthy.Did you know that there are some bacteria (细菌) in our bodies that help us? They are called probiotics (益生菌). These bacteria help us stay healthy ……

special wings. Their wings kill bacteria. This can help us store food longer.Insects help us.... Scientists find that some insects have special wings. Their wings kill bacteria. This can help us store ……

in the US. One of the most common kinds of bacteria on your shoes is Escherichia coli (大肠杆菌). Researchers..., blood and heart.But we don’t need to worry about this too much. For healthy people, the bacteria found ……

often is a good way to stay away from bacteria. In fact, our hands can carry many kinds of bacteria... worldwide, Science Daily reported.We know that coughing (咳嗽) and sneezing (打喷嚏) can help to spread ……

are dangerous. They can make us sick.Don’t worry too muchA healthy person needs to come into contact with thousands of bacteria to become sick.Bacteria usually stay on the ground. But most of us don’t spend ……

WASHING your hands is an easy way to stay healthy. But do you really know how to wash them?A recent survey showed that over half of the people in the US wrongly believed that washing their hands ……

人体内有多少微生物？. ……

on your hands? It is true. Bacteria are everywhere around us: in the air, on our skin (皮肤), in our bodies and on the ground. But most bacteria aren’t dangerous. Only some can make us ill. Bacteria ……

there are many kinds of bacteria (细菌) on shoe soles (鞋底). Some of these bacteria can make us ill. However, we don’t need to worry too much. These bacteria are not enough to make a healthy person ill ……

to make them stay healthy. Feeding antibiotics to animals is legal in the US. But the producers.... On March 9, the company announced that its chicken suppliers in the US would stop using human ……

handful of nuts a day is enough.Plain yogurt 酸奶Yogurt has healthy bacteria that help keep our stomach... that can make us more healthy? Experts from Harvard University give us some suggestions.Salmon 三文鱼Salmon ……

of them make great natural treatments for your skin. They can help you have a smooth, healthy skin... yogurt twice a day can help people have better breath. The yogurt suppresses bacteria on the tongue ……

the most important thing that you can do to stay healthy is to wash your hands.By frequently washing your... Carolina, in the US, answered that very question by comparing different hand-washing products ……

of chemical that is good for our healthC. is a kind of bacteria that can make us sickD. is a kind... bacteria can be found in the open air.B. The bacteria found on shoes are extremely harmful to us.C ……