The Meglev Train travels in a vacuum between two magnets, ___ no pollution is caused and less energy is consumed.
#14096
A
where
B
which
C
when
D
therefore
推荐题目
—How often does your sister surf the internet?—About .
#14232
A
three time
B
three times
C
three time every day
D
three times a day
The two sides ____a series of compromise suggestions and then signed the contract.
#13447
A
made out
B
worked out
C
put out
D
picked out
The heart is a（n） organ, It is of absolute importance to our body and life．
#11243
A
vital
B
energetic
C
living
D
lively
Experts insist that packets of cigarettes come with a health warning ______ to them.
#11880
A
be attached
B
attach
C
attached
D
attaching