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【单选题】
在链栈中进行出栈操作时 ( ) 。A.
必须判别栈是否满
B.
判别栈元素的类型
C.
必须判别栈是否空
D.
不做任何判别
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【单选题】Which city has the guest come to?
A.
Sydney.
B.
Australia.
C.
Wildlife Park.
D.
It isn ’ t mentioned.
【简答题】听下面一段材料，回答第1、2题。 1. Which city has the woman visited recently? A. New York. B. London. C. Paris. 2. What does the woman like about the city? A. City life. B. Weather. C. Environment.
【单选题】which city has the largest populationin China
A.
Beijing
B.
chongqing
C.
Guangzhou
D.
Shenzhen
【简答题】Ask _______ American which city has the worst air pollution，and the answer is sure to be Los Angeles. A．some B．every C．any D．all
【单选题】Which city has the biggest population in Canada?
A.
Toronto.
B.
Vancouver.
C.
Quebec.
D.
Ottawa.
【单选题】Which city has the nickname ‘big apple ’?
A.
New York
B.
Philadelphia
C.
Boston
D.
Washington D.C
【简答题】the router switch_______________
【多选题】Which city has the major trading center for foreign exchange market?
A.
London
B.
New York
C.
Hongkong
D.
Singapore
E.
Tokyo
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