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【单选题】
设R和S是P上的关系，P是所有人的集合，R={A.
{ |x,y ∈ P ∧ x是y的丈夫}
B.
{ |x,y ∈ P ∧ x是y的孙子或孙女}
C.
Φ
D.
{ |x,y ∈ P ∧ x是y的祖父或祖母}
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举一反三
【单选题】想知道2008年的8月8号是星期几,可以使用下面哪一条命令得到结果?( )
A.
ｃａｌ ２００８．８
B.
ｃａｌ ８ ２００８
C.
ｃａｌ ８
D.
ｃａｌ ２００８ ８
【单选题】想知道２００８年的８月８号是星期几，可以使用下面哪一条命令得到结果？（ ）
A.
ｃａｌ ２００８．８
B.
ｃａｌ ８ ２００８
C.
ｃａｌ ８
D.
ｃａｌ ２００８ ８
【简答题】Neither RosettaStone nor TellMeMore has announced when to______smartphone applications.
【简答题】女店员用彩纸把礼物包好。(wrap)(汉译英)
【简答题】女店员用彩纸把礼物包好。(wrap)
【简答题】Suppose that SmartphoneA has 256 MB RAM and 32 GB ROM, and the resolution of its camera is 8 MP; Smartphone B has 288 MB RAM and GB ROM, and the resolution of its camera is 4 MP; and Smartphone C h...
【单选题】From the first paragraph, we learn that______.
A.
Wiko has dominated the smartphone market in Britain
B.
Wiko produces low-end smartphones
C.
Wiko plans to cooperate with local smartphone manufactures in Britain
D.
Britons show their passion for Wiko
【简答题】The smartphone has become the centerpiece of many students' digital lives. Yes, it can be a distraction(困扰，分心), but it is also an incredible tool that can transform classroom learning and late-night s...
【单选题】Apple wants to enter Latin Americas smartphone market because______.
A.
it has cultural appeal to the corporation
B.
there is enormous potential in the region
C.
its economy has surpassed any region except Asia
D.
its speed of development is the fastest in the world
【单选题】The smartphone has__________camera.
A.
high-heeled
B.
high-carbon
C.
high-quality
D.
low-carbon
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