Since China opened to the outside world in ________,the number o

分类: 英语科技文选(00836) 发布时间: 2024-08-31 01:42 浏览量: 1
Since China opened to the outside world in ________,the number of hotels has increased considerably.
A、1970 
B、1978 
C、1980 
D、1997
【正确答案】:B