根据课文《一株紫丁香》组词
休____ 伸____ 甜____ 歌____ 院____
除____ 息____ 您____ 牵____ 困____
根据句意和汉语注释,写出单词的正确形式。(1)Our English teacher has offered us some useful ____ (建议). I think it will help us a lot in our English study.(2)Here are two ____ (音乐会) tickets for you.(3)Daniel ____ (不愿) to accept my books ,which made me very sad.(4)____ (比较) this new TV set with the old one, you will see which is better.
函数f(x)=-x2+2x+3的单调递减区间是 ( )
在地质年代越久远的地层中,成为化石的生物是( )