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
--- Only one of these books is worth _______.--- _______ is no wonder that you look so upset.
#13798
A
to read; That
B
of reading; This
C
being read; There
D
reading; It
30. Having introduced the advanced scientific methods, the factory turned out ______ in 2006 as a year before.
#14475
A
as many as four times machines
B
four times machines as many
C
four times as many machines as
D
four times as many machines