Despite such a big difference in ____ towards what one eats, there is no doubt that the West regard the

Chinese food as something special. [ ]

A. point

B. idea

C. attitude

D. sight

可以转变为酪氨酸的是（）

A．甘氨酸

B．色氨酸

C．组氨酸

D．谷氨酸

E．苯丙氨酸