High-speed trains travel at 300 kilometers an hour，which is about normal trains．
#14190
A
four times the speed as
B
the speed four times of
C
four times as the speed of
D
four times the speed of
推荐题目
—Can I call on her next week ?— Yes，if ______ .
#12411
A
you are convenient
B
you will be convenient
C
it is convenient to you
D
it will be convenient to you
My first ________ of him was that he was a kind and thoughtful young man.(2012·山东，24)
#11000
A
expression
B
attention
C
satisfaction
D
impression
The expert says that nowadays there are too many problems linked to poor diet and a ________of exercise.
#12362
A
limit
B
lack
C
need
D
demand
The new stadium being built for the next Asian Games will be __________ the present one.
#14118
A
as three times big as
B
three times as big as
C
as big as three times
D
as big three times as
Vehicle designers are well aware that they need to ______ the idea of cars that have a low environmental impact.
#11899
A
end up with
B
put up with
C
keep up with
D
come up with