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【单选题】
关于 Windows7的叙述中正确的是()。A.
Windows7是分时操作系统
B.
Windows7是多用户多任务操作系统
C.
Windows7是单用户单任务操作系统
D.
Windows7是单用户多任务操作系统
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【简答题】What is 'Unity0com'? What changes will it probably bring to the U.S. political system?
【单选题】$email = 'name@example.com'; $user = strstr($email, '@', true); echo $user
A.
name
B.
example.com
C.
@example.com
D.
@
【简答题】A．You will find the full name of people listed in the white pages of U.S. telephone books. B．Both small and large area have their own area codes in the U.S. C．Payment for the wrongly dialed number is ...
【单选题】Which is both the name of a U.S. State and the name of a lake?
A.
Alberta
B.
Ontario
C.
Michigan
D.
Montana
【单选题】st={"name":"xxx","emails":["a@123.com","b@123.com"],"age":20} del st["emails"][0] st["emails"].append("c@123.com") del st["age"] print(st) 结果是
A.
{'name': 'xxx', 'emails': ['a@123.com','b@123.com', 'c@123.com']}
B.
{'name': 'xxx', 'emails': ['a@123.com','a@123.com', 'c@123.com'],"age":20}
C.
{'name': 'xxx', 'emails': ['a@123.com','a@123.com', 'c@123.com']}
D.
{'name': 'xxx', 'emails': ['b@123.com', 'c@123.com']}
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