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【单选题】
—The passage is too hard to understand. —Yes, ________ it's very short and there are no new words in it.A.
so
B.
as
C.
because
D.
though
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【简答题】阅读短文判断对错。 Let's play ball! Around the world people play many different ball s.It is not certain how these s were created,but we do know the history of two of them. Basketball started in the Un...
【单选题】Given that the pushing sequence of a stack is {1, 2, ⋯ , n} and popping sequence is {p1, p2, ⋯ , pn}. If p1 = n, how many different possible popping sequences can we obtain?
A.
1
B.
2
C.
n-1
D.
n
【单选题】Given that the pushing sequence of a stack is {1, 2, ⋯ , n} and popping sequence is {p1, p2, ⋯ , pn}. If p2 = n, how many different possible popping sequences can we obtain?
A.
1
B.
2
C.
n-1
D.
n
【单选题】If n = pqr, where p, q, and r are three different positive prime numbers, how many different positive divisors does n have, including 1 and n?
A.
3
B.
5
C.
6
D.
7
E.
8
【简答题】Different colours can affect us in many different ways; that’s according to Verity Allen. In a new programme “Colour me Healthy”, Verity looks at the ways that colours can influence how hard we work a...
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