With the development of science,more new technology      to the fields of IT.
#104546
A
has introduced
B
is being introduced
C
is introduced
D
was introduced
推荐题目
My sister-in-law___________ my brother for ten years.
#102198
A
married with
B
has married
C
has been married with
D
has been married to
When Nancy was at college, she ______ three foreign languages. But I am surprised to find that she ______ all except a few words of each.
#101433
A
spoke; had forgotten
B
had spoken; had forgotten
C
spoke; has forgotten
D
had spoken; has forgotten