RNI是以下列哪项为基础制定的（）。
A.AI
B.UL
C.RAI
D.EAR
E.BMR
参考答案：D
解析：RNI是以EAR为基础制定的。
The new model of car is so expensive that it is only________the reach of those with high incomes. [ ]
A. beyond
B. at
C. in
D. within
决定病毒立体对称性
