Therewere, __________, 1500 people celebrating on the square.
A: by number
B: from number
C: by my count
D: from count
A: by number
B: from number
C: by my count
D: from count
举一反三
- 阅读以下程序public class Count{static int count;int number;public Count(){count = count + 1;number = count;}}class Test{public static void Main(){Count a = new Count();Count b = new Count();Count c = new Count();}}程序运行后，对象a的count值是（） A: 0 B: 1 C: 2 D: 3
- 查询选修了2门课程以上的学生学号（） A: select sid,count(*) from sc group by sid having count(*)>=2 B: select sid,count(*) from sc group by sid where count(*)>=2 C: select sid,count(*) from sc where count(*)>=2 group by sid D: select sid,count(*) from sc group by cid having count(*)>=2
- 以下哪条语句可以实现查询选了课的学生人数（ ）。 A: select count(*) from sc B: select count(sno) from sc C: select count(distinct sno) from sc D: select count(cno) from sc
- According to the passage, what did small children do when they were asked to count a pile of red and blue pencils A: a. They counted the number of pencils of each color. B: b. They guessed at the total number of pencils. C: c. They counted only the pencils of their favorite color. D: d. They subtracted the number of red pencils from the number of blue pencils.
- select count(*) from 表名 group by count(*)