题目

The Healthy Habits Survey shows that only about one third of American seniors have correct habits. Here are some findings and expert advice. 1.How many times did you brush your teeth yesterday? Finding：A full 33% of seniors brush their teeth only once a day. Step：Remove the 300 types of bacteria in your mouth each morning with a battery-operated toothbrush. Brush gently for 2 minutes, at least twice a day. 2.How many times did you wash your hands or bathe yesterday? Finding：Seniors, on average, bathe fewer than 3 days a week. And nearly 30%wash their hands only 4 times a day-hal男性、女性产生生殖细胞的器官分别是（ ）A．睾丸、子宫 B．附睾、卵巢C．卵巢、睾丸 D．睾丸、卵巢