Write an invitation letter based on the following situation:Your birthday is on Saturday next week. Please write an informal invitation letter to invite your American friend Peter to come to your home for your birthday party.
Write an invitation letter based on the following situation:
Your birthday is on Saturday next week. Please write an informal invitation letter to invite your American friend Peter to come to your home for your birthday party.
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You’re going to have a quiz ( )by another two in the ( )month. A. followed,followedB. followed,followingC. following,followedD. following,following
查询1997，1999年出生的同学信息，正确的SELECT语句是______。A．SELECT * FROM student WHERE YEAR(birthday) NOT IN(1997, 1999)B．SELECT * FROM student WHERE YEAR(birthday)=1997 OR YEAR(birthday)=1999C．SELECT * FROM student WHERE YEAR(birthday) IN(1997, 1999)D．SELECT * FROM student WHERE YEAR(birthday) EXISTS(1997, 1999)
查询1997，1999年出生的同学信息，正确的SELECT语句是（）。A．SELECT * FROM student WHERE YEAR(birthday) NOT IN(1997, 1999);B．SELECT * FROM student WHERE YEAR(birthday)=1997 AND YEAR(birthday)=1999;C．SELECT * FROM student WHERE YEAR(birthday) IN(1997, 1999);D．SELECT * FROM student WHERE YEAR(birthday) EXISTS(1997, 1999);
假设学生情况表中的生日字段为 birthday，数据类型为日期时间型，则查找年龄在18到20之间的学生信息，查找条件表达式正确的是：A．2020-year（[birthday]）＞=18 and 2020-year（[birthday]）＜=20B．2020-year（[birthday]）＞=18 or 2020-year（[birthday]） ＜=20C．year(now() )- year（[birthday]）＞=18 and year(now() )- year（[birthday]）＜=20D．year(now() )- year（[birthday]）＞=18 or year(now() )- year（[birthday]）＜=20
1、从datetime类型的数据列 birthday 中获取年份，正确 的方法是：A．frame['birthday'].dt.yearB．frame['birthday'].yearC．datetime.now().yearD．pd.to_datetime(frame['birthday'])
已知对学生记录的描述为： struct student { int num; char name[20],sex; struct{ int year,month,day; }birthday; } struct student stu; 设变量stu中的“生日”是“1995年11月12日”，对“birthday”正确赋值的程序是______。A．year=1995; month=11; day=12;B．stu.year=1995; stu.month=11; stu.day=12;C．birthday.year=1995; birthday.month=11; birthday.day=12;D．stu.birthday.year=1995; stu.birthday.month=11; stu.birthday.day=12;
已知对学生记录的描述为： struct student { int num; char name[20],sex; struct{ int year,month,day; }birthday; }; struct student stu; 设变量stu中的"生日"是"1995年11月12日"，对"birthday"正确赋值的程序是______。A．year=1995;month=11;day=12;B．stu.year=1995;stu.month=11;stu.day=12;C．birthday.year=1995;birthday.month=11;birthday.day=12;D．stu.birthday.year=1995;stu.birthday.month=11;stu.birthday.day=12;
已知对学生记录的描述为： struct student { int num; char name[20],sex; struct{ int year,month,day; }birthday; }; struct student stu; 设变量stu中的“生日”是“1995年11月12日”，对“birthday”正确赋值的程序是______。A．year=1995;month=11;day=12;B．stu.year=1995;stu.month=11;stu.day=12;C．birthday.year=1995;birthday.month=11;birthday.day=12;D．stu.birthday.year=1995;stu.birthday.month=11;stu.birthday.day=12;
16、如果要约束学生表的人员必须是“90后“，那么Birthday字段（日期型）应该添加的检查约束时________。A．Birthday＞="1990-01-01"B．Birthday＞=1990C．Birthday="90后"D．Birthday＞="90后"