GRE数学概念1
问题描述：
GRE数学概念1
13....2/3 as many A as B:A=2/3*B
...twice as many...A as B:A=2*B
14.a if only b:b->a
13 语法上怎么理解
答
13题是：as many as 是和谁一样多 这里就是A和B的2/3一样多
14没看懂