Seldom ______ such a night.
A. I did see
B. have I seen
C. have seen I
D. I saw
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Without water, human ______ .
A. can't live
B. couldn't live
C. not live
D. don't live
9 is the ______ of 3 multiplied by 3.
A. homework
B. meet
C. product
D. print
Lily likes ______ better than ______.
A. potato/tomato
B. potatoes/tomatoes
C. a potato/a tomato
D. potatos/tomatos
原发性恶性骨肿瘤的X线表现是
A. 边界清楚,骨质破坏,骨膜反应明显
B. 边界不清楚,骨质破坏,骨膜反应明显
C. 边界不清楚,骨质破坏,无骨膜反应
D. 边界不清楚,骨质增生,无骨膜反应
E. 边界清楚,骨质增生,无骨膜反应