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【单选题】
下列哪个说法是错误的A.
建立一个空列表 list1 = [ ]
B.
建立一个空元祖tup1 = ( )
C.
建立一个空字典dict1 = { }
D.
建立一个空集合set1 = { }
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皮皮学刷刷变学霸
举一反三
【单选题】下列关于握手的说法中正确的是（）。
A.
初次见面握手时间应控制在3秒钟内
B.
无论性别，导游都应首先主动伸出手
C.
可以一脚门里一脚门外与他人握手
D.
为表示亲热，可边握手边拍对方肩头
【单选题】关于握手，以下说法正确的是（）
A.
初次见面握手时间应控制在3秒钟内
B.
无论性别，导游都应首先主动伸出手
C.
行握手礼，可以一脚门里一脚门外与他人握手
D.
为表示亲热，可边握手边拍对方肩头
【简答题】American black bears appear in a variety of colors despite(尽管) their name. In the eastern part, most of these bears have shiny black fur, but in the west they grow brown, red, or even yellow coats. To...
【单选题】听力原文： American black bears appear in a variety of colors despite their name. In the eastern part of their range, most of these brown, red, or even yellow coats. (32) To the north, the black bear is ac...
A.
Gray or white.
B.
Brown or red.
C.
Red or yellow.
D.
Yellow or red.
【单选题】Despite much research, there are still certain elements in the life cycle of the insect that _____not fully understood.
A.
are
B.
were
C.
is
D.
was
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