皮皮学，免费搜题
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搜题
【单选题】
钻石的颜色分为几个系列
A.
三个系列，无色--浅黄色，褐色，彩色
B.
三个系列，无色--浅黄色，灰色，彩色
C.
二个系列，无色--浅黄色，彩色
D.
二个系列，无色，彩色
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A.
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A.
正确
B.
错误
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A.
正确
B.
错误
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【单选题】The little baby was very excited ( )the sight of his mother.
A.
in
B.
at
C.
with
D.
to
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【判断题】植物缺氮时,植株矮小,叶小色淡或发红。( )
A.
正确
B.
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【简答题】Which of the following is implied in the first paragraph?［A］ People used to be f2. Which of the following is implied in the first paragraph? ［A］ People used to be forced to work under whips. ［B］ The a...
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【单选题】When were the chemicals first used in America?
A.
Before the American Revolution.
B.
Over thirty years ago.
C.
Over two hundred years ago.
D.
Before the discovery of potassium nitrate.
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【单选题】The T-shirt was first used as uniform by the ______ in America.
A.
Air Forces
B.
Army
C.
Navy
D.
Police
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【判断题】America first used fireworks in 1777 to commemorate Independence Day.
A.
正确
B.
错误
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