两个5相乘,积是多少?正确的列式计算是( )
A:5+5=10
B:25÷5=5
C:5÷5=1
D:5×5=25
— He thinks that girls are smarter than boys when it comes to learning English.
— But two years ago he thought_______.
下列函数中,既是奇函数又是增函数的为( )
下列各项字注音无误的一项是( )