Scientists have to work hard to keep _____ with modern discoveries and developments.
#7444
A
company
B
track
C
touch
D
pace
推荐题目
Pine trees, of which there are almost one hundred _____, are found throughout the North Temperate Zone.
#6456
A
species
B
samples
C
specimens
D
Standards
He is an old doctor with a lot of ________. But he has never travelled by air before.Taking a plane was quite ________ experience for him this time.
#5485
A
experience; an
B
experiences; an
C
experience; /
D
experiences; /
She had a guilty________ about not telling the police what had actually happened.
#7083
A
consciousness
B
conscience
C
consequence
D
confusion
It is said that dogs will keep you _________for as long as you want when you are feeling lonely．
#6967
A
safety
B
company
C
house
D
friend
The lawyer required the ____ of evidence so that he could defend the accused.
#6332
A
judgment
B
contribution
C
subscription
D
presentation