The roast duck looks __________.
A. invite
B. invited
C. inviting
D. to invite
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Do you have an ____________with Mr. Smith?
A. appointment
B. call
C. date
D. invitation
It’s time to ___________ now.
A. see
B. board
C. plane
D. flight
胃肠道穿孔的最典型X线征象为
A. 咖啡豆征
B. 阶梯状液平面
C. 膈下新月形气体
D. 结肠积气
E. 肠腔扩张