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剪断过长引线时应贴着()。

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关于相对数,下列哪一个说法是错误的( )

A. 相对数是两个有联系的指标之比
B. 常用相对数包括相对比、率与构成比
C. 计算相对数时要求分母要足够大
D. 率与构成比虽然意义不同,但性质相近,经常可以混用
E. 计算相对数时分母不宜过小

[音频]Use your notes to complete the summary of the lecture below. Then complete your summary with your partner's.Names are sometimes called a cultural ____1_________.In the United States, parents choose a first name, also known as a(n) ____2___ name, in a variety of ways. One way is to use the name of a(n) ____3____ or _____4______ member who has recently died. Another is to pass a name from one ____5____ to the next. Some parents choose a name that sounds __6_____ to them to help their child do well in the business world. Most parents, though, choose a name because ______7_____.The four categories of English-language surnames are: place names, ____8_______ , added names, and ___9_____ names. The most common occupation name is ____10______.

What is the main reason given for the widespread use of English?[音频]

A. English is the most beautiful language in the world.
B. People need a common language in the world.
C. Many people use the Internet.

Which reason is not given to argue that English is a global language?[音频]

A. English is the main language used in many international situations.
B. English is the official language in many countries.
C. English is the only language used in international meetings.

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