珩齿是加工()热处理的齿轮的有较高生产率的一种精加工方法。
A、经过
B、未经过
参考答案:A
When Mom looked back on the early days of their marriage, she wondered how they had managed
with ________ money. [ ]
A. so few
B. such few
C. so little
D. such little
请说出抗日小英雄的名字?至少三个。