The doctor said jokingly that his own infection of the virus _______ the discovery of a vaccine (疫苗)of the disease.
#76217
A
stood for
B
called for
C
paid for
D
contributed to
推荐题目
—You look upset.What's the matter？(2011·江苏)—I had my proposal ________ again.
#63918
A
turned over
B
turned on
C
turned off
D
turned down
Yang Ziqiong is said to __________ in the film Rain of Swords.
#71533
A
act leading part
B
make a leading role
C
play leading part
D
play a leading part
Many people ________ the accident, so it was not difficult to investigate（调查）.
#70657
A
witnessed
B
yelled
C
annoyed
D
envied
He __________ his aunt’s when he went to Wuhan on business.
#72925
A
called on
B
called at
C
dropped in on
D
dropped in
The rise in wood fuel(燃料) use has __________ the disappearance of forest and the loss of habitats for pandas..
#67128
A
based on
B
resulted from
C
set off
D
contributed to