Do remember to be________. We must avoid any possible risks when doing this dangerous chemical experiment—burns, poisonous gases or cuts from broken tubes.
#18315
A
curious
B
thoughtful
C
considerate
D
cautious
推荐题目
Our research has focused on a drug which is so _____ as to be able to change brain chemistry.
#20887
A
powerful
B
influential
C
monstrous
D
vigorous
—What do you think of this matter? —This is a matter of __________ importance. I think.
#19640
A
especial
B
quiet
C
rather
D
special
He was a(n) ___________singer until the age of 40, when he turned professional.
#18052
A
gifted
B
amateur
C
sacred
D
entire
Come and see me whenever________________.
#18325
A
it is convenient for you
B
it will be convenient for you
C
you are convenient
D
you will be convenient