【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
【单选题】拉斯韦尔五因素传播模式中的要素不包括()。
【判断题】Mr. Red likes Chinese food very much.
【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
C.
landmark buildings alone