第1题:
The STUDENT_GRADES table has these columns:STUDENT_ID NUMBER(12)SEMESTER_END DATEGPA NUMBER(4,3)The registrar requested a report listing the students‘ grade point averages (GPA) sorted from highest grade point average to lowest.Which statement produces a report that displays the student ID and GPA in the sorted order requested by the registrar? ()
A. SELECT student_id, gpa FROM student_grades ORDER BY gpa ASC;
B. SELECT student_id, gpa FROM student_grades SORT ORDER BY gpa ASC;
C. SELECT student_id, gpa FROM student_grades SORT ORDER BY gpa;
D. SELECT student_id, gpa FROM student_grades ORDER BY gpa;
E. SELECT student_id, gpa FROM student_grades SORT ORDER BY gpa DESC;
F. SELECT student_id, gpa FROM student_grades ORDER BY gpa DESC;
第2题:
试题基于如下三个关系,其中学生关系student的主码是sno,课程关系course的主码是cno,选课关系SC的主码是(sno,cno)。
查找学生姓名及其所选修课程的课程号和成绩,正确的SQL语句是( )。
A)SELECT sname FROM student,SELECT cno,grade FROM sc
WHERE student.sno=sc.sno
B)SELECT sname, cno,grade FROM student,course
WHERE student.sno=course.cno
C)SELECT sname, cname,grade FROM student,course, sc
WHERE student.sno=sc.Snoand sc.cno=course.cno
D)SELECT sname,cno, grade FROM student,sc
WHERE student.sno=sc.sno
第3题:
(40)查找学生姓名及其所选修课程号和成绩,正确的 SQL 语句是
A)SELECT sname FROM student, SELECT cno,grade FROM sc WHERE student.sno =sc.sno
B) FROM sname,cno,grade FROM student,course WHERE student.sno =course.cno
C) SELECT sname ,canme,grade FROM student,course,sc WHERE student.sno =sc.sno and sc.c
no=course.cno
D) SELECT sname ,cno,grade FROM student,sc WHERE student.sno =sc.sno
第4题:
第5题:
在关系SC(student_id,student_name,course_id,grade)中,有 student_id,course_id→grade student_id→student_name 关系SC最高达到______范式。
A.不满足
B.1NF
C.2NF
D.3NF
第6题:
对于数据表:student(sno,sname,sex,age,grade),查询学习成绩为空的学生的学号和姓名,下面语句正确的是______。
A.SELECT sno,sname FROM student WHERE gade=NULL
B.SELECT sno,sname FROM student WHERE grade IS NULL
C.SELECT sno,age FROM student WHERE grade IS NULL
D.SELECT mo,age FROM student WHERE grade=NULL
第7题:
对于学生信息表:student(sno,sname,sex,age,grade),查询学习成绩为空的学生的学号和姓名,下面语句正确的是
A.SELECT sno,sname FROM student WHERE grade=NULL
B.SELECT sno,sname FROM student WHERE grade IS NULL
C.SELECT sno,age FROM student WHERE grade IS NULL
D.SELECT sno,age FROM student WHERE grade=NULL
第8题:
Ⅲ. Reading
Comprehension
从下列每篇短文的问题后所给的四个选择项中选出一个最佳答案。
Passage One
Questions 21 to 25 are based on the following passage.
Many teachers believe that the responsibility for learning lies with the students. If a long reading assignment is given,instructors expect students to be familiar with the information in the reading even if they do not discuss it in class or give an examination. (Courses are not designed merely for students to pass exams). The ideal student is considered to be one who is motivated to learn for the sake of learning,not the one interested only in getting high grades. Grade-conscious students may be frustrated with teachers who do not believe it is necessary to grade every assignment. Sometimes homework is returned with brief written comments but without a grade. Even if a grade is not given,the student is responsible for learning the material assigned.
When research is assigned,the professor expects the student to take the initiative and to complete the assignment with minimal guidance. It is the student's responsibility to find books,periodicals,and articles in the library. Professors do not have the time to explain how a university library works,they expect students,particularly graduate students,to be able to exhaust the reference sources in the library.
Professors will help students who need it,but prefer that their students not be overly dependent on them. (This differs from teacher-student relationships in other countries. )In the United States,professors have other duties besides teaching. Often they are responsible for administrative work within their departments. In addition,they may be obliged to publish articles and books. Therefore the time that a professor can spend with a student outside of class is limited. If a student has problems with classroom work,the student should either approach a professor during office hours or make an appointment.
“Courses are not designed merely for students to pass exams. ”This means teachers______.
A. want students to fail exams
B. care only about exam grades
C. believe that passing exams is not the only purpose of a course
D. design courses for lectures only
第9题:
第10题: