下列格式计算正确的是( )
A:2﹣1=﹣2
B:8-2=6=2
C:x2•x3=x6
D:(﹣4x4)÷(2x2)=﹣2x2
读短文,填空
Hello ! My name is Amy .I'm a girl .I'm from England. Look !This is my father and this is my mother .My father is a teacher. My mother is a doctor .The boy is my brother .He's eight .He's a student .who's this girl ? Can you guess??