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【单选题】
哥尼斯堡七桥问题，是一个经典问题，如下图(a)所示，描述为“由河流隔开的四块陆地上建造了七座桥，寻找走遍这七座桥且只许走过每座桥一次最后又回到原出发点的路径”。关于哥尼斯堡七桥问题，著名数学家欧拉对该问题做了一个抽象：“顶点”为陆地，“边”为连接两块陆地的桥梁。这个抽象被称为“图”，并定义了顶点的“度”为连接一个顶点的边的数量。关于此问题回答问题： 【图片】对河流隔开的m块陆地上建造的n座桥梁，若要找到走遍这n座桥且只许走过每座桥一次的路径，则需满足以下条件_____。A.
m 个顶点 n 条边的图连通的，即由一个顶点出发可沿边到达任何一个其他顶点
B.
每个顶点的度应为偶数
C.
既需要满足 (A) 又需要满足 (B)
D.
不满足上述条件 (A)(B)(C) 的图也能找出满足题目规定要求的路径
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【单选题】— Will you go to the museum tomorrow? — Yes, I will go _______ it’s windy.
A.
since
B.
as though
C.
if
D.
even though
【单选题】—I wonder why the thinnest plastics bags, though ________ , are still in use here. —Well, it’s no easy job to solve this problem effectively.
A.
banning
B.
banned
C.
to ban
D.
having banned
【单选题】I'll see you at the meeting next week ______ it's cancelled before then.
A.
in spite
B.
though
C.
in case
D.
unless
【单选题】I don't want to go inside the waiting hall, it's too _____. I prefer _____ outside though it is kind of cold. [ ]
A.
boring; to be
B.
crowded; being
C.
late; to wait
D.
early; waiting
【单选题】I've got a bit of headache．It's nothing much, ______.
A.
anyhow
B.
moreover
C.
besides
D.
though
【简答题】在下列( )里填入适当的助词。每个( )填一个假名。 高先生は毎朝7時( )家( )出ます。
【单选题】Though it’s not the 1st time that I ________ Beijing, I still can’t adjust myself to the weather.
A.
been to
B.
had been to
C.
have been to
D.
went to
【单选题】—-Did you go to Peter’s birthday party last Saturday? —–No, I didn’t , though I .
A.
invited
B.
wasn’t invited
C.
had invited
D.
was invited
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