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
---I called you last night, but nobody answered.---Oh, I usually___off my cellphone by 9:00 p.m.
#100796
A
switched
B
have switched
C
switch
D
had switched
What a big snake! It ________ one meter and a half in length.
#102850
A
is measured
B
is measuring
C
measures
D
will measure
Miss Jones ________ music at Bardon School for five years when she was abroad and now she is an actress.
#100207
A
had taught
B
has taught
C
taught
D
has been teaching
I believe that those mountains ________ with trees in a few years’ time.
#102710
A
are covered
B
will be covered
C
are covering
D
will cover
Here is a list of names of the guests to be invited to the party. Please don’t _______ any of them when typing.
#99814
A
let out
B
make out
C
leave out
D
put out