动物生来就有的，由动物身体里的____所控制的行为，称为先天性行为．
Look! This is 1 apple tree. I can see many 2. The apples 3red. They are round. How are they? They are 4. Apples, apples, I love 5. An apple a day keeps the doctor away.
—He's friendly and helpful.
“为了你和他人的健康，请不要吸烟！”世界卫生组织规定“世界无烟日”是每年的（ ）
