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【单选题】
An old friend from abroad, ____ I was expecting to stay with, telephoned me from the airport.
A.
that
B.
whom
C.
who
D.
which
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参考答案:
举一反三
【简答题】China's long-awaited rules on school bus safety finally came into force on Tuesday, including a list of ways aimed at reducing the risk of accident. Among the biggest changes is that buses carrying st...
【单选题】If you are a‘lifer’.
A.
you take less time to make it to the top.
B.
you have a long list of previous jobs.
C.
you tend to move less far up in the company.
D.
you keep changing your job all your life.
【单选题】萨福是哪个国家的女诗人
A.
罗马
B.
意大利
C.
法国
D.
希腊
【单选题】在一个具有n个顶点的有向图中,构成强连通图时至少有( )条边。
A.
n/2
B.
n-1
C.
n
D.
n+1
【单选题】在一个具有n个顶点的有向图中,若所有顶点的出度之和为s.则所有顶点的入度之和为( )
A.
s
B.
s-1
C.
s+1
D.
n
【单选题】You probably have a long mental list of moments and facts you wish you could remember—but actually you cannot. The good news,【B1】______, is that while such memories may be currently【B2】______, they ar...
A.
although
B.
rather
C.
though
D.
therefore
【简答题】Josiah Henson is but one name on a long list of ___(6)____ men and women
【简答题】在一个具有n个顶点的有向图中,所有顶点的出度之和为9,则所有顶点的入度之和为( )。
【单选题】生产观念的实质是什么?
A.
以企业为中心
B.
以顾客为中心
C.
重生产、轻营销
D.
轻生产、重营销
【单选题】在一个具有n个顶点的有向图中,所有顶点的出度之和为dout,则所有顶点的入度之和为()
A.
dout
B.
dout-1
C.
dout+1
D.
n
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