Mr. Li is absent today. What do you consider ________ to him?

A．happens

B．is happened

C．happening

D．has happened

小儿合理膳食中其蛋白质脂肪糖应占总热量各为：蛋白质 脂肪 糖 蛋白质 脂肪 糖

A．10% 20% 70%

B．20% 20% 60%

C．15% 35% 50%

D．30% 20% 50%

E．20% 10% 70%