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
Helen said that they ________ for 3 years.
#103890
A
had married
B
married
C
had been married
D
had marriage
—Why were you so late this morning? —I _____ in heavy traffic for an hour on the way here.
#101422
A
have been caught
B
have caught
C
had caught
D
was caught