根据Passage Three的内容，选择正确的一项。在答题卡上把正确答案的字母代号涂黑。

Passage Three

Teeth are important. Strong and healthy teeth help you eat foods that help you grow. They help you speak clearly and look best. Here are two tips for you to take care of your teeth. First，brush your teeth the right way（办法）. Brush your teeth at least（最少）twice a day-after breakfast and before bedtime. If you can，brush after lunch or after sweet snacks，too. Brush all of your teeth，not just the front ones. Get a new toothbrush every three months. Second，have good eating habits. Eating too much sugar is bad for your teeth. Eat lots of fruits and vegetables and drink more water but not soda.