— Would you like _______ the Wutong Mountain tomorrow?
— If my mother _______, I will go with you.
A:climbing; will allow
B:climbing; allows
C:to climb; allows
D:to climb; will allow
下面各句中没有错别字的一项是( )
已知数列{an}的通项公式为an=nn+1,则数列{an}是( )
甲、乙两台热机,甲的效率比乙的低,其含义是( )