—_________ your friend play the guitar? —Yes, he _________.
A: Do; do
B:Is; is
C:Can; can't
D:Can/ can
Good morning, boys and girls. This is Lucy.
苯、甲苯是重要的芳香烃,在有机合成中有重要的广泛的用途.
下列各句中,没有语病的一句是( )