After years of research, he found the key ____ differences between species.
#5237
A
to explain
B
to explaining
C
of explaining
D
explaining
推荐题目
—Why is Peter working so hard these days?.—The _______ of failing the exam next week makes him do so.
#6145
A
announcement
B
threat
C
competence
D
dilemma
Being able to speak another language fluently could be a great ___when you are looking for a job.
#5801
A
advantage
B
chance
C
help
D
importance
Less than twenty percent of the employees in their company are women.That is to say,women are in the____.
#5132
A
majority
B
activity
C
probability
D
minority