Can you bring some _____ to me, Mary?         [ ]

A. strawberry                

B. strawberries

C. strawberrys                

D. apple

在紫外分光光度法中，供试品溶液的浓度应使吸收度的范围在

A．0.1～0.3
B．0.3～0.5
C．0.3～0.7
D．0.5～0.9
E．0.1～0.9