假设表student中，有一条id=1的记录，现要求将其name修改为“huahua"，grade修改为98.5.下列选项中，正确的SQL语句是（ ）。 A: UPDATE `student` SET `name`='huahua' `grade`=98.5 WHERE `id`=1 B: UPDATE `student` SET `name`='huahua', `grade`=98.5 WHERE `id`=1 C: UPDATE FOR `student` SET `name`='huahua', `grade`=98.5 WHERE `id`=1 D: UPDATE `student` `name`='huahua' `grade`=98.5 WHERE `id`=1

【单选题】姜华华客人的姓名正确录入方式为() A. Last Name:Jiang; First:Huahua; Alt. Name: 姜华华 B. Last Name: 姜; First: 华华; Alt. Name: Jiang Huahua C. Last Name:jiang; First:huahua; Alt. Name: 姜华华 D. Last Name: 姜; First: 华华; Alt. Name: jiang huahua

【填空题】阅读程序写结果 public class Student { private static int sid = 0; private String name; int id; Student(String name) { this.name = name; id = sid++; } public void info() { System.out.println("My name is "+name+" No."+id); } public static void infoSta() { System.out.println(sid); } public static void main(String arg[]) { Student.sid = 100; Student st1 = new Student("huahua"); st1.sid = 2000; Student st2 = new Student("meimei"); st1.info(); st2.info(); } }