淀粉的液化
参考答案：
利用液化酶使糊化淀粉水解成糊精和低聚糖等，使黏度大为降低，流动性提高
面包师制作面包时，要使面包膨大松软，需用到下列哪种菌类（ ）
A．醋酸菌
B．酵母菌
C．乳酸菌
D．霉菌
_______our school’s teaching reform, the studying burdens on us students have already______lighter than before.
A．Owing to; turned on
B．Due to; turned over
C．Despite; turned around
D．Thanks to; turned out
