I would a____(感激) it if you could do me a favor at the party.
—Where's Sam?
—He _______ for a test in his room.
提问:吕蒙读后发生了什么样的变化?通过谁的所见所语来写?
由王维《使至塞上》中的名句“大漠孤烟直,长河落日圆”,可以使人联想到范仲淹《渔家傲》中同是写边塞景象的词句____。
已知函数f(x)=fx=x2+1,x>0cosx,x≤0,则下列结论正确的是( )