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【单选题】
下列哪种情况下阻生牙必须拔除A.
下颌骨有足够的间隙使智齿可正常萌出时
B.
牙位前倾角度不大，与对颌牙可形成正常颌关系时
C.
第二磨牙不能保留，智齿牙根尚未形成可作移植牙时
D.
邻牙不能保留，但智齿前倾过大不能作基牙时
E.
完全埋伏于骨内，与邻牙牙不相通，无临床症状时
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【单选题】Passengers are not allowed to take ____________ inflammable or explosive objects.
A.
any
B.
some
C.
many
D.
a lot
【简答题】在PowerPoint 2010中有三种母版:()、()、()。
【单选题】When I walked past the street and saw the children playing happily, their happy laughter _____ memories of my childhood. [ ]
A.
called in
B.
called for
C.
called on
D.
called up
【单选题】Passengers are not allowed to smoke on the plane because ______.
A.
there’re babies on board
B.
most passengers are against smoking
C.
smoke may activate the alarm
D.
it’s a non-smoking flight
【单选题】I saw a boy _____ basketball there when I walked past this morning. [ ]
A.
play
B.
played
C.
playing
D.
to play
【判断题】When a Economy Class passenger wants to use the lavatory in the Business Class, you will say " Please go back to the aft. Economy Class passengers are not allowed to use the lavatory in the Business ...
A.
正确
B.
错误
【单选题】What can be learned from Paragraph 1?
A.
Business-class passengers are not charged with extra fees.
B.
Customers may not know how much to pay until they get aboard.
C.
Plane tickets are more expensive than they were a decade ago.
D.
Asian airlines charge fewer fees than their American counterparts.
【单选题】Translate the underlined part in the sentence " The minority of non-paying passengers are not being supported by the majority of fare paying passengers."
A.
少数逃票乘客
B.
少数没带钱的乘客
C.
多数逃票乘客
D.
多数没带钱的乘客
【简答题】在PowerPoint 2010中有3个母版,即 、 和备注母版。
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