China's first moon rover, Yutu, or Jade Rabbit touched the lunar surface at 9:14 a.m.on December 14,2013,  ________deep trace on the loose lunar soil.
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A
left
B
leaving
C
Having left
D
To leave
推荐题目
Most computer users think it necessary for their software ________ regularly.
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A
to up date
B
to be updated
C
to have been up dated
D
to have updated
He studied hard, __________ the exam.
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A
aim at
B
aiming at passing
C
aiming passing
D
aiming to passing
If you’re a poor driver, you should not_______ at night. 
#95514
A
to try driving
B
try to drive
C
to try to drive
D
try driving