His sister left home in 1998, and_________ since.
A.had not been heard of
B.has not been heard of
C.had not heard of
D.has not heard of
第1题:
He is talking so much about America as if he ____ there.
A、had been
B、has been
C、was
D、been
第2题:
运算结果是字符串“home”的表达式是( )。
A.LEFT(”myhome”,4)
B.RIGHT(”hometown”,4)
C.SUBSTR(”myhometown”,4,4)
D.SUBSTR(”myhometown”,3,4)
第3题:
第4题:
运算结果是字符串“home”的表达式是( )。
A.LEFT("myhome",4)
B.RIGHT("hometown",4)
C.SUBSTR("myhometown",4,4)
D.SUBSTR("myhometown",3,4)
第5题:
第6题:
如果要筛选“学生表”中1998年出生的学生,在高级筛选/排序窗口中,“出生日期”字段的筛选条件应当设置为()。
A.Left([出生日期], 4)=1998
B.>=#1998-01-01# and <=#1998-12-31#
C.<=1998-01-01 and >=1998-12-31
D.Mid([出生日期], 1, 4)=1998