“治未病”是指（）

A.防止疾病的发生和发展

B.外避病邪和既病防变

C.未病先防和早期诊治

D.未病先防和既病防变

E.调养正气和控制病传

An individual sees her income rise from $ 80000 to $ 88000, and along with it, her consumption of macaroni has decreased from eight dozen packages per year to six dozen packages per year. Which of the following is closest to the income elasticity of her demand for macaroni, and should macaroni be classified as a normal good or an inferior goodIncome elasticityType of good（） ①A. -3.0 Inferior ②B. -3.0 Normal ③C. -0.33 Inferior

A. ①

B. ②

C. ③