答案:D
Last Christmas, The Washington Post published an essay _______ what kind of Christmas dolls are popular with children in China.
A.asks
B.asking
C.asked
D.having asked
嫩肉粉致嫩主要是利用______致使肉类原料中的蛋白质水解而实现的。
A.酶
B.食盐
C.味精
D.蛋白质