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 woman got nothing in _______for her kindness, which made her very upset.
#12156
A
prize
B
award
C
reward
D
medal
China has been considering raising the retirement age since 2008 to ________ its shrinking workforce and aging society.
#12212
A
set off
B
put off
C
bring about
D
cope with
It is really important for parents to reach a ______ between what they want and what their kids desire.
#10826
A
conclusion
B
compromise
C
communication
D
consensus
Tom asked the candy makers if they could make the chocolate easier ______ into small pieces.
#12731
A
break
B
breaking
C
broken
D
to break