With the help of high technology, more and more new substances ______ in the past 10 years.
#71929
A
discovered
B
have discovered
C
had been discovered
D
have been discovered
推荐题目
Although the manager did not mention any names at meeting, everyone knew who he was _____.
#68291
A
leading to
B
turning to
C
referring to
D
holding to
To see a young couple loving each other is no _________, but to see an old couple loving each other is the best sight of all.
#67134
A
way
B
doubt
C
wonder
D
sense
I _____ her not to walk on the thin ice but she would not listen to me.
#84181
A
warned
B
persuaded
C
suggested
D
noticed
—Will Thursday or Friday you ?—Either will .
#83402
A
fit , be
B
fit , OK
C
suit , all right
D
suit , do