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【单选题】
证明1+ 1 2 + 1 3 + 1 4 +…+ 1 2 n -1 ＞ n 2 （n∈N * ），假设n=k时成立，当n=k+1时，左端增加的项数是（ ）A.
1项
B.
k-1项
C.
k项
D.
2 k 项
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【单选题】By the time you arrive home, I______for several hours, so please dont make a noise when you come in.
A.
shall be sleeping
B.
would have slept
C.
shall sleep
D.
shall have been sleeping
【简答题】Oh, when shall I arrive again at my home, where I shall no longer have to s_____-shall no longer have to s_____ before the small ones 哦,我什么时候才能再次回家,在那里我就不用再卑躬屈膝------再也不用对那些小人物点头哈腰了。
【简答题】使用Win7提供的__________可以管理计算机系统中的软硬件资源。
【简答题】Your friend has invited you to his home to celebrate Spring Festival. When you arrive, you see a room full of elderly grandparents, your friend’s parents and a couple of your friend’s cousins. What do...
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