Which one is wrong about 9/11?（）
A.About 3000 people were killed.
B.It happened in 2002.
C.The World Trade Centre and Pentagon were attacked.
D.It was the first attack on mainland USA since 1812.
正确答案：B
Which one is wrong about 9/11?（）
A.About 3000 people were killed.
B.It happened in 2002.
C.The World Trade Centre and Pentagon were attacked.
D.It was the first attack on mainland USA since 1812.
正确答案：B