The White House is in ____________.[ ]
A. New York
B. Washington, D. C.
C. Canada
答案:B
The police at Denver International Airport examined a bomb threat against a United Airlines flight to San Francisco,____________ the flight for hours.
A.delayed
B.to delay
C.delaying
D.had delayed
急性化脓性阑尾炎术后,7天拆线,切口无红肿、无渗液、无压痛,记录为()
A.Ⅱ甲
B.Ⅱ乙
C.Ⅲ甲
D.Ⅲ乙
E.,以上均不是