liáng guó
ēn huì
jiā qín
zào yì
shèn zhì
____
九折表示____ 是原价的____ %.
—OK. Don't worry. I can ____________ at 6:00 in the morning.
判断下列句子是否符合常识,用”正确”或”错误”表示。
A cow can give us milk.( )
已知数列{an}的通项公式为an=nn+1,则数列{an}是( )