引起急性肾小球肾炎的常见细菌是（）
A.表皮葡萄球菌
B.金葡菌
C.肺炎链球菌
D.β溶血性链球菌
E.大肠杆菌
参考答案：D
芒硝的性味是
A．辛、苦、凉B．甘、淡、凉C．酸、甘、寒D．咸、苦、寒
The present financial crisis has greatly contributed to thousands of workers________and many factories .
A．laying off, closed down
B．laid off, closed down
C．laid off, closing down
D．being laid off, closing down
