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【单选题】
Not only ______ polluted, but ______ crowded.A.
was the city, were the streets
B.
the city was, the streets were
C.
was the city, the streets were
D.
the city was, the streets were
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举一反三
【单选题】平面任意力系先后向平面内一点 O 简化,下列属于平衡的是( )。
A.
M’ O =0 ，F R’=0
B.
M’ O ≠0 ，F R’=0
C.
M’ O ≠0 ，F R’≠0
D.
M’ O =0 ，F R’≠0
【单选题】网络营销是以( ) 为基础来实现营销目标的一种市场营销方式。
A.
广域网（WAN）
B.
内联网（Intranet）
C.
外联网（Extranet）
D.
局域网（LAN）
E.
互联网（Internet）
【单选题】学生信息存储在列表当中，下面哪个代码不能实现寻找成绩为x的学生姓名的功能？
A.
stus=["zhangsan",86,"lisi",72,"wangwu",91,"taoyan",62] x=int(input("x:")) for i in range(len(stus)): if stus[i]==x: print(stus[i-1]+" is in class") else: print("no this score in class")
B.
stus=["zhangsan",86,"lisi",72,"wangwu",91,"taoyan",62] x=int(input("x:")) for i in len(stus): if i%2==1: if x==stus[i]: break if i print(stus[i-1]) else: print("no this score in class")
C.
stus=["zhangsan",86,"lisi",72,"wangwu",91,"taoyan",62] x=int(input("x:")) for i in range(len(stus)): if i%2==1: if x==stus[i]: break if i print(stus[i-1]) else: print("no this score in class")
D.
stus=["zhangsan",86,"lisi",72,"wangwu",91,"taoyan",62] x=int(input("x:")) for i in range(len(stus)): if i%2==1: if x==stus[i]: break if i print(stus[i]) else: print("no this score in class")
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