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下列物质不属于六大营养物质的是(    )

A:维生素

B:蛋白质

C:水

D:氧气

上一题 下一题 0.0难度 选择题 更新时间:2019-04-12 11:27:46

答案(点此获取答案解析)

D

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集合,,则A∩B=

同类题2

计算下面图形的面积。(单位:cm)

同类题3

根据图片,写出对应的单词。____

同类题4

阅读理解

  Lang Lang is a famous Chinese pianist. He was born in 1982 in Shenyang. He showed his talent(天赋)for playing the piano when he was two. He began to take piano lessons at the age of 3. At the age of 5, he won the Shenyang Piano Competition. When he was 11, he won the first prize at the Fourth International Young Pianists Competition.

    He began his study at Curtis Institute(学院)in America when he was 15. He became the first Chinese student at the institute. During his study there he made great progress and became a top pianist. On August 14th, 1999, the great Andre Watts was ill so Lang Lang played at concert instead of him and he was successful. Then he became famous all over the world.

    In August of 2008, more than 5 billion people watched Lang Lang's performance at the opening ceremony(开幕式)of the Beijing Olympic Games. He also played at the opening ceremony of the Shanghai Expo(世博会).

同类题5

如图所示是小华探究“凸透镜成像规律”的实验操作过程.

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