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【单选题】
截交线的两个投影为椭圆,一个投影为直线段,则被切割体是( )
A.
圆柱体
B.
圆锥体
C.
圆球体
D.
以上3个答案都有可能
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【单选题】叶与珠鳞的着生方式为对生或轮生的现象可见于( )。
A.
杉科与柏科
B.
柏科
C.
杉科
D.
松科
【单选题】The mayor of Beijing says that all construction work for the Beijing Olympics _____ by 2006.
A.
has been completed
B.
has completed
C.
will have been completed
D.
will have completed
【单选题】The mayor of Beijing says that all construction work for the Beijing Olympics___ now
A.
has been completed
B.
has completed
C.
will have been completed
D.
will have completed
【简答题】The mayor of Beijing says that all construction work for the Beijing Olympics ____ by 2006. A.has been completed B.has completed C.will have been completed D.will have completed
【判断题】根据轴测图和已知投影,补绘的左视图是正确的。
A.
正确
B.
错误
【单选题】Beijing National Stadium,the showpiece of the Beijing  Olympics,has fallen into disuse since the end of the games, it difficult to make a profit. [     ]
A.
make
B.
to make
C.
making
D.
made
【简答题】I prefer the stories about the swimmers at the Beijing Olympics,one of which is about Zakia Nassar. She's a 21-year-old Palestinian __ 21 __ Bethlehem studying dentistry in Jenin. Having had neither a...
【单选题】Lin Dan won the first prize in the Beijing Olympics, which helped him gain the ____ of the world.
A.
congratulation
B.
appreciation
C.
admiration
D.
administration
【单选题】The mayor of Beijing says that all construction work for the Beijing Olympics __ by the end of 2007. [     ]
A.
has been completed
B.
has come to an end
C.
will have come to an end
D.
will have completed
【单选题】叶与珠鳞的着生方式为对生或轮生的现象可见于 。
A.
松科
B.
杉科
C.
柏科
D.
杉科与柏科
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