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
The official ________ to say more about the plan, so the details of it remain secret.
#11127
A
agreed
B
declined
C
attempted
D
declared
Camels have three eyelids to ________ themselves from the blowing sand.
#11748
A
protect
B
stop
C
keep
D
hide
Ten years ago the population of our village was _________ that of theirs.
#14054
A
as twice large as
B
twice as large as
C
twice as much as
D
as twice much as
More and more attention has been drawn to the fact that many children are ________ in the countryside when their parents flood into the cities for jobs.
#13376
A
left off
B
left aside
C
left out
D
left behind
The child should be punished. You shouldn’t let him _____ telling lies.
#13653
A
keep away from
B
keep away with
C
get away from
D
get away with