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【单选题】
使用什么可以将当前文件操作指针指向文件结尾A.
4
B.
seek(-1)
C.
seek(0)
D.
seek(1)
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反馈参考答案：
举一反三
【单选题】Where is the International Fair Center?
A.
Three more stops from where the bus is.
B.
Two stops ahead.
C.
Two blocks down the street.
D.
Not mentioned.
【单选题】Where is the Yoga Center?
A.
The Yoga Center is on Seventh Street.
B.
The Yoga Center is on Seventeenth Street.
C.
The Yoga Center is next to a Chinese restaurant.
【单选题】Where is the Business Center?
A.
In the office, madam.
B.
On the first floor, madam.
C.
It is open now, madam.
D.
It opens at 9:00 o’clock, madam.
【单选题】Three particles of masses m 1 = 1.2kg, m 2 = 2.5kg, and m 3 = 3.4kg form an equilateral triangle (等边三角形) of edge length a = 140cm. Where is the center of mass (x COM , y COM ) of this system?
A.
(100cmm, 150cm)
B.
(83cm, 58cm)
C.
(-83cm, 58cm)
【简答题】基因工程抗体类型包括（）,（）,?（）?,（）等.[每空1分]
【单选题】Excuse me. Where is the information center?
A.
OK, thank you.
B.
It doesn't matter.
C.
It's over there.
D.
No way.
【单选题】Where is the center of tulip breeding? _____________
A.
Turkey
B.
Old World
C.
Holland
D.
the United States
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