()
A: to
put one's hand or fingers on in order to feel.
B: a
group of things that share certain features or properties that set
the group apart from others; kind.
C: to
hope for or look forward to.
D: the
condition of being protected from or out of danger.
举一反三
- touch<br/>() A: to<br/>put one's hand or fingers on in order to feel. B: to<br/>go forward by using great energy. C: the<br/>condition of being protected from or out of danger. D: to<br/>write using a computer or other device with a keyboard.
- avoid<br/>() A: a<br/>group of things that share certain features or properties that set<br/>the group apart from others; kind. B: a<br/>large white surface on which movies, pictures, or other images can be shown. C: not<br/>awake. D: to<br/>keep away from.
- struggle<br/>() A: the<br/>condition of being protected from or out of danger. B: to<br/>hope for or look forward to. C: to<br/>write using a computer or other device with a keyboard. D: to<br/>go forward by using great energy.
- safety ( <br/>) A: of poor quality. B: fine or rich in<br/>quality. C: to travel for<br/>pleasure in a ship. D: the condition of<br/>being protected from or out of danger.
- 统计各系男生人数,最准确的SQL语句是(<br/>)。 A: SELECT<br/>COUNT(*) FROM stduents GROUP BY d_no WHERE sex='男' B: SELECT<br/>COUNT(*) FROM students WHERE sex='男'<br/>GROUP BY d_no C: SELECT<br/>COUNT(*) FROM students WHERE sex='男'<br/>ORDER BY d_no D: SELECT<br/>COUNT(*) FROM students HAVING sex='男'<br/>GROUP BY d_no
内容
- 0
bend ( ) A: to lean one's<br/>upper body from the waist (often followed by "over",<br/>"forward", or "back"). B: having a<br/>pleasing and healthy appearance; nice to look at. C: to bring into<br/>being for the first time. D: a few.
- 1
We<br/>look forward to _______ a trial order A: receiving B: receive from you C: receive D: receive<br/>your
- 2
例如数据库中有A表,包括学生、学科、成绩三个字段,数据库结构为:[br][/br] [br][/br] 学生 学科 成绩 [br][/br] 张三 语文 60 [br][/br] 张三 数学 100 [br][/br] 李四 语文 70 [br][/br] 李四 数学 80 [br][/br] 李四 英语 80 [br][/br] 张三 语文 60 [br][/br]如何统计最高分>80的学科?( ) A: SELECT MAX(成绩) FROM A GROUP BY 学科 HAVING MAX(成绩)>80; B: SELECT 学科 FROM A GROUP BY 学科 HAVING 成绩>80; C: SELECT 学科 FROM A GROUP BY 学科 HAVING MAX(成绩)>80; D: SELECT 学科 FROM A GROUP BY 学科 WHERE MAX(成绩)>80;
- 3
recent<br/>() A: having<br/>to do with or happening in the very near past. B: in<br/>one's private thoughts only; without uttering or expressing;<br/>privately. C: a<br/>narrow passageway in a building; corridor. D: kept<br/>from being seen or known by others; private.
- 4
关系SC(Sno，Cno，Grade)表示学号、课程号、成绩。现要查询最高分在91分以上的学生的学号和平均成绩，正确的语句是______。 A: SELECT Sno，MAX(Grade)<br> FROM SC<br> WHERE MAX(Grade)≥91<br> GROUP BY Sno B: SELECT Sno，MAX(Grade)<br> FROM SC<br> GROUP BY Sno<br> HAVING MAX(Grade)≥91 C: SELECT Sno，MAX(Grade)<br> FROM SC<br> WHERE MAX(Grade)≥91<br> ORDER BY Sno D: SELECT Sno，MAX(Grade)<br> FROM SC<br> GROUP BY Cno<br> HAVING MAX(Grade)≥91