根据人体血液循环图回答问题
People in North China eat noodles as their main food ___ people in the south eat rice.
商店老板说一支棒棒糖要3元，小建想买3支给小朋友们，请问小建需花多少钱？
下列划线字的读音全都正确的一项是（ ）
