thanks to the internet different kinds of information --- in a short timea\ can be learnedb\ has been learnedc\ can learnd\ has leasrned请您说明理由好吗?
问题描述:
thanks to the internet different kinds of information --- in a short time
a\ can be learned
b\ has been learned
c\ can learn
d\ has leasrned
请您说明理由好吗?
答
a\ can be learned