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【单选题】
采用顺序查找方法查找长度为n的顺序表时,不成功查找的平均查找长度为( )。A.
n
B.
n/2
C.
(n+1)/2
D.
(n-1)/2
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【单选题】In front of the gate of the park ____ like an umbrella covering the entrance.
A.
an old pine tree stood
B.
an old pine tree did stand
C.
did an old pine tree stand
D.
stood an old pine tree
【简答题】某建筑场地方格网、地面标高如图,方格边长a=20m,计算场地的初步设计标高?
【多选题】下面关于握手礼的说法哪些是正确的（）。
A.
握手的顺序主要取决于"尊者优先"原则
B.
社交场合应由先到者先伸手为礼
C.
客人告辞时，应由客人先伸手为礼
D.
职位低的人与职位高的人握手时应先伸手为礼
【单选题】The old hostess stood ______ for a moment when she saw a beggar appear before her suddenly.
A.
surprising
B.
to surprise
C.
surprised
D.
having surprised
【单选题】Reading comprehension: Make the best choice according to Text B. Why did the hostess ask the three old men to come in and have something to eat?
A.
Because they were old.
B.
Because they wanted to have a talk with the family.
C.
Because the hostess thought they must be hungry.
D.
Because they were important to the family.
【多选题】下面关于握手礼说法正确的是()?
A.
握手的时候目光应该注视对方，面带微笑
B.
多人握手时，为了表示礼貌，可交叉握手
C.
握手时不可戴手套握手，但可戴帽子、墨镜等饰物
D.
握手应力度适中，与异性握手尤其应注意，不可长久抓住异性的手不放
【单选题】Why did the bus hostess go to another bus?
A.
To compare experience with the hostess on that bus.
B.
To get some orders.
C.
To find if there were some vacant seats.
D.
To fetch some more egg-salad sandwiches.
【单选题】Why did the hostess ask the three old men to come in and have something to eat?
A.
Because they were old .
B.
Because they wanted to have a talk with the family.
C.
Because the hostess thought they must be hungry.
D.
Because they were important to the family
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