脓液稀薄、量多、粉红色( )
A.金黄色葡萄球菌
B.溶血性链球菌
C.铜绿假单胞菌
D.大肠杆菌
E.类杆菌
参考答案:B
________Switzerland (瑞士) is very small , _______it is the land of watch and it is very rich.
A.Though; but
B.Because ; so
C.Because ; /
D.Though ; /
在我国膳食结构中为什么不能以肉食为主,而应以素食为主?