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问题
选择题
Would you like _____ fishing with me?
A. go
B. to go
C. going
D. goes
答案
答案:
B
填空题
若
1+3+5+…+(2x-1)
1
1•2
+
1
2•3
+…+
1
x(x+1)
=110(x∈N
+
),则x=______.
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填空题
如图所示,赛艇的桨可看成一个杠杆。则赛艇的桨属于________杠杆。(选填“省力”或“费力”)
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