Clean your sweet teeth巧克力牙膏Chocolate is bad for your teeth, but not this one. US company Theodent made chocolate flavor (口味) toothpaste. It brushes your teeth and you can even eat it. ……

fully.A. To help use animal bones fully.B. To help repair teeth quickly.B. To help repair teeth... the scientists grow bones?1. How do the scientists grow bones?A. They grow cells in molds.A. They grow ……

in the morning, when you are still having sweet dreams, your mother is shouting: “Get up, wash your face and hands, brush your teeth, and have breakfast!”Brushing our teeth always seems to be part ……

动物秘密A rabbit’s teeth never stop growing its whole life. ……

the chemical signatures kept in the bones and teeth of at least seven different groups of people from...;Scientists studied the chemical signatures kept in the bones and teeth of at least seven different groups ……

signatures (标记) kept in the bones and teeth of at least seven different groups of people from the Stone... studied the chemical signatures (标记) kept in the bones and teeth of at least seven different groups ……

) . Of course, wisdom teeth don’t make you any smarter. They are a symbol (标志) of growing up. An adult (成年...我为什么掉牙？Everyone has two sets (两副) of teeth. The first set is called baby teeth (乳牙). They start ……

人体最坚硬的部分是什么？What is the hardest part of the human body? The answer is our teeth. That’s because teeth have a special tissue (组织) that covers them. It is called enamel (牙釉质). It’s the hard, shiny ……

? Bones? It’s your teeth! There is a special thing called enamel (牙釉质) in teeth. It is the hardest thing in the human body and keeps bacteria (细菌) away. However, teeth are vulnerable (易受伤害的) to problems ……

tooth” mean in Paragraph 3?A. Swedes’ teeth smell sweet.A. Swedes’ teeth smell sweet.A. Swedes’ teeth smell sweet.B. Swedes have many bad teeth. B. Swedes have many bad teeth. B. Swedes have ……

) are much longer than their other teeth. These front teeth are very strong and keep growing. They are great...This year’s national Love Teeth Day falls on Sept 20. Do you know that most mammals (哺乳 ……

than their other teeth. These front teeth are very strong and keep growing. They are great...This year’s national Love Teeth Day falls on Sept 20. Do you know that most mammals (哺乳动物) have all ……

) . Of course, wisdom teeth don’t make you any smarter. They are a symbol (标志) of growing up. An adult...我为什么掉牙？Everyone has two sets (两副) of teeth. The first set is called baby teeth (乳牙). They start ……

. “It’s tasty,” she says. Coke tastes great, but it is really bad for your teeth and bones (骨骼). It has... is good for your eyes and bones. ……

you reach your 20th birthday, most of your bones have finished growing, and you now have fewer bones... of your bones have finished growing, and you now have fewer bones.   ……