创建名为course的数据库的命令是（ ）。 A: creat database course; B: creat course; C: create database course; D: create course;

已知如下关系：学生Student(S#, Sname)，课程Course(C#, Cname, T#)，选课SC(S#, C#, Score)，教师T(T#, Tname)。其中S#为学号，Sname为学生姓名，C#为课号，Cname为课程名，T#为教师编号，Score为成绩，Tname为教师名。 阅读SQL语句 SELECT AVG(Score) FROM Course, SC WHERE Course.C#=SC.C#； 关于其查询结果，下列说法正确的是_____

删除表course的记录。其SQL语句为（ ）。 A: DELETE from course where * B: DELETE * from course C: DELETE course D: DELETE FROM course

创建一个名称为course的数据库,通常使用下列( )的语句。 A: CREATE DATABASE course; B: CREATE course; C: CREATE TABLE course; D: SHOW DATABASE course;

He's seen many changes ____ his long life. A: during the course of B: in course of C: in the course of

​A _________ is an online course aimed at unlimited participation and open access via the web.‎ A: Magnificent Open Online Course B: Magnificent Online Open Course C: Massive Open Online Course D: Massive Online Open Course

Which course is not recommended by the professor to you in your first semester?? A writing course|A foundational course to your major|A challenging course leading you to a specialty|A physical education course

【多选题】Course summary design is one of the most important parts for creating a course, which required top design for the whole course including course background, course objectives, design principles, l

考虑到参照完整性的外码设计，如图所示的student,course,sc三张表的创建顺序应为（）。 A: sc,course,student B: sc,student,course C: student,sc,course D: student,course,sc

“Would you mind telling him the news?” “_____, but I don’t know if I _____ him these days.” （ ） A: Of course not, shall see B: Of course not, see C: Of course, shall see D: Of course, see