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【单选题】
生物群落特征正确的论述是( )。A.
生物群落的特征是群落内所有生物的群落表现
B.
一棵树木的高大挺拔代表了森林群落的外貌特征
C.
一棵草、一棵树各自显示着不同生物群落的外貌
D.
植物、动物、微生物对生物群落特征的影响大小一致
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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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