Joe has been studying Chinese for three months．but he can ________ understand people when they speak Chinese．

A．nearly

B．certainly

C．usually

D．hardly

下面漫画给我们的启示是

A．子女给父母洗脚都是假装的

B．孝敬父母的方式有很多种

C．父母年老时一定会得到子女的回报

D．孝敬父母应体现在平时的一言一行中