LED technology is widely used in various fields all over the world.（）
The Channel Tunnel was closed for 10 hours after the earthquake occurred.（）
When the earthquake happened on 28 April people didn't notice it.（）
It was reported that one lady had got her head and neck injured, but not seriously.（）
France and several other European countries sent their medical teams to work side by side with the British doctors.（）
The country's strongest earthquake took place in London in 1580?（）