Questions 28 to 31 are based on the following passage. 

Food writer Bee Wilson hasa messageof hope for parentsstruggling to get their children to eat vegetables:“ As parents,we havea far greaterpower than we think we have to form. children ’s tastes, ” saysWilson. 

In her new book, First Bite , Wilson examines how genetics(遗传 ), culture, memory and early feedingpatternscontribute to our food preferences.She says that achild ’s ability to judge good food can be formed evenbefore birth. And this insight can be helpful for parents who want their children to eat well and healthfully.“ 

One of the main things we know about taste is that liking is a consequenceof familiarity ，so the things thatour mothers eat， even before we’ re born，affect the way we'll respond to thoseflavors. When we later encounterthem, they seemfamiliar. “ There havebeen remarkable studies done showing that if someoneeatsalot of garlicwhen she's pregnant, the baby will grow up to love garlic. 

Wilson, amother of three, notes that babiesare most open to trying new flavors between the agesof fourandsevenmonths. But, Wilson adds, even if parents miss introducing afood during the so-called “ flavor window ” ，all hope is not lost.“ 

It not that the flavor window is shut and we can never learn to love bitter green vegetables. Humans canlearn to love new flavors at any age, ” Wilson says.“ One of the amazing things about our relationship with food ishow malleable (可塑的） it is. But we don't usually as adults give ourselvesan opportunity to change. ” 

28.According to Bee Wilson，achild ’s food tastes________.