Mei Li:
In which year were Concorde planes retired from service??
Shuai Zheng:
2003
Mei Li:
Only two wild cats live wild in Europe the wild cat itself is one what is the other??
Shuai Zheng:
lynx
Mei Li:
What word describes the property of a metal which allows it to be stretched into wire??
Shuai Zheng:
ductility