The substance can be added to gasoline to ______ the speed of automobiles.
#81438
A
quicken
B
shorten
C
loosen
D
enlarge
推荐题目
She ______ at the last moment.              
#73214
A
turned up
B
turned down
C
turned off
D
turned on
Stand there! I'll __ you.
#80521
A
take down
B
take photos of
C
take off
D
take notes
− Have you __________ any new ideas?− Yeah. I’ll tell you later.
#69575
A
come to
B
come across
C
come up with
D
come out with