信息检索作业ppt

It is required that the students ___ their homework on time .A .would hand in B .should hand in C .hands in D .is to hand in it is required that the subject （ ）immediately.a.referirng to have been discussed b.referred to being discussed c.refereing to be discussed d.referred to be discussed It is required that the machine be oiled as frequently as necessary为什么用Be oiled而不用Must be oiled ,is oiled或者Will oil求详解 It is required that no smoking ______ in the school.A.was allowed B.be allowed C.would be allowed D.had been allowed 为什么要进行城市轨道交通的规划? Is that her alarm clock?改为否定句 Are those Cheng Hai 's model pianes 改为单数怎么改?Is that her alarm clock?改为肯定句怎么改?it ‘ his tape player 改为复数怎么改？ 求on weekdays的同义词 以及on weekends的同义词 on的同义词 IS that her alarm clock的意思 我国城市轨道交通建设发展方向 航海家的小故事急用! vacation 同义词 英语句子中副词是什么?举例子,最好用中英来举简单的例子 why are(do) you still lie in bed.语法上用do还是are,一直不懂啊 改错：Are you still in the bed? 你还知道哪些中外航海家的故事?需要非常具体的 城市轨道交通轨道工程有哪些特点 城市轨道交通经济特征来分有哪些基本形式 传统交通系统与城市轨道交通各有什么特点 我在莉莉的生日聚会上见到他很惊讶.I‘m surprised-------- ---------- him at Lily's birthday party. 有哪些航海家的故事 quick的副词和形容词是什么quick是名词吗 写出下列形容词的副词形式.quick,easy,bad,sudden, Entertainer of the Century 习题：根据中文意思用单词的适当形式填空 The 21 century is a new age of (发明)这个发明是用inventing还是inventions啊 never hand a dream come true歌词 雷电的秘密不许乱写,要详细 quietly的形容词不要乱填 word中,什么快捷方法把一小段一小段的文章连成一起,比如下面复制的：She’s like no otherBefore you know it you’ll be on your kneesShe’s an easy loverShe’ll take your heart but you won’t feel itShe’s like no otherAn Can you 【 】（提示：给…看）us your photos?括号里应填什么? 在编辑文章时,用快捷键怎样选定一段文章?