问题
单项选择题
A．to seize more land
B．to save time
C．to set a world record
D．to attain security and reduce conflicts
答案
参考答案：D
搜题请搜索小程序“爱下问搜题”
A．to seize more land
B．to save time
C．to set a world record
D．to attain security and reduce conflicts
参考答案：D