导致急性咽炎症状较重的病原菌为()。
A.卡他莫拉菌
B.流感嗜血杆菌
C.A组乙型链球菌
D.金黄色葡萄球菌
E.肺炎双球菌
参考答案:C
You can make a ______ by turning off the light after you leave the house.
A.difference
B.decision
C.promise
D.mistake