皮皮学，免费搜题
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【单选题】
3随意在画面选择了4个色彩参考点,其中最能够代表皮肤色的描述是( )A.
R=220 G=195 B=170
B.
R=100 G=250 B=200
C.
R=20 G=20 B=190
D.
R=0 G=0 B=0
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举一反三
【单选题】It is implied in the passage that ______ in studying mathematics.
A.
in every country 'mathematic gene' plays a decisive role
B.
in every country 'mathematic gene' does not play a decisive role
C.
in America 'mathematic gene' plays a decisive role
D.
in countries other than the U. S. 'mathematic gene' plays a decisive role
【简答题】Every country has its own historic background.
【简答题】人体中含量较多的元素(即常量元素)有11种，它们约占人体质量的99.95%.以下元素中不属于常量元素的是( ) A.氧元素 B.铁元素 C.钙元素 D.碳元素
【单选题】Earth Hour takes place in ________. D. every country
A.
March
B.
darkness
C.
landmark buildings alone
D.
every country