题目内容

在HTML页面中，带有“< >”符号的元素被称为单标记与双标记。

A. 对
B. 错

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Yo-Yo MA is one of the _1_ _2_ cellist in the world today. ___3. He is also known for his willingness to think _4_ _5_ _6___ musically. Yo-Yo Ma has recorded over 75 albums. Many of them were strictly considered classical in arrangement. But some of them differ greatly from classical music.[音频]

Yo-Yo Ma was certainly a gifted musician.In _1_, he was _2_↓At the age of _3_, he was already known for his _4_↓In _5_, he gave a performance for US President.↓By the time he was _6_, he _7_ on TV.↓Through his _8_, he performed with _9_ orchestras.↓He took a _10_ liberal arts education.↓In _11_, he received a _12_ degree.↓By the early _13_, he had become _14_ known. He also expressedhis _15_ interest in musical education for children.[音频]

What was the similarity between Yo-Yo Ma and many other music geniuses according to the speaker?[音频]

A. They all worked hard.
B. They all enjoyed the reputation.
C. They all went to the same school.
D. They all achieved a lot.

某企业生产甲产品，单位产品耗用的直接材料标准成本资料如下：直接材料的价格标准是0.5元／公斤，用量标准是6公斤／件，标准成本3元／件。本月生产产品400件，使用材料2500公斤，实际购进单价0.55元／公斤。那么，直接材料成本差异为（）元，其中价格差异（）元，用量差异（）元。