A:太平洋板块
B:印度洋板块
C:大西洋板块
D:北冰洋板块
13 + 23 =1
73 + 83 + 103 + 113 =12
163+173+193+203+223+233 =39
…
则当m<n且m,n∈N时, 3m+13+3m+23+3m+43+3m+53+⋯+3n−23+3n−13 =____(最后结果用m,n表示)
In order to make the policeman believe her, she ________a story.
下列关于台湾经济的发展,叙述正确的是( )