问题补充:
The lowest price of the new iPad in the USA is dollars.
A. three hundreds and ninety-nine
B. three hundred and ninety-nine
C. three hundred ninety-nine
D. three hundreds ninety-nine
答案:
A. three hundreds and ninety-nine
(答案→)B. three hundred and ninety-nine
C. three hundred ninety-nine
D. three hundreds ninety-nine
解析:句意:新的ipad的最低价格是399。具体数字不加s,个位和十位之间有连字符,百位和十位之间加and。故选B