A NASA experimental jet , the X-43A,flew at a world –record speed ---11,260 kilometres an hour on November 17.This speed is __ as that of sound.
#12996
A
astentimesfast
B
tentimessofast
C
tentimesasfast
D
tentimesfaster
推荐题目
Believing in people is the key to motivating people to ______ their potentials.
#12495
A
have
B
hide
C
reach
D
limit
.The company ______ a survey to find out customers’ reaction to the new products.
#14111
A
concerned
B
conducted
C
predicted
D
previewed
To tell the truth, what you said was too ________ for us to understand.
#10703
A
complex
B
comfortable
C
concrete
D
common
Kate is only a nodding ______, not very familiar to me.
#12847
A
acquaintance
B
partner
C
companion
D
coincidence