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问题 单项选择题

Excel中，下列输入数据属于字符型的是（）。

A.=A1+A3

B.=SUM（A1：A2）

C.=A1+3

D.SUM（A1，A2）

答案

参考答案：D

解析：Excel中，允许输入公式，其标志是输入一个等号，由此得出备选答案中的A、B、C中输入的都是公式而不是字符型数据；在Excel中字符型数据是指第一个字符为字母、汉字或其他符号（除-、+外）的数据，备选答案D中的内容表示输入的是一个字符型数据。

单项选择题

图例：

123456789
◇◎△●☆■⊙▲★

数字表(表中所含数字为1至9的自然数)：

 第1列第2列第3列第4列第5列第6列第7列第8列第9列
第1行285434349
第2行832441221
第3行432829665
第4行249178289

根据图例和数字表回答下列各题：

数字表第9列中的两最小值之和所对应的符号是（）。

A．●

B．★

C．◎

D．■
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单项选择题

The swan is mostly silent through its life, unable to sing sweet songs like most other birds. In ancient times, however, people believed a swan sings a most beautiful song just before it dies. The ancient Greek philosopher Socrates talked of this 2,300 years ago. Socrates explained that the swan was singing because it was happy. The bird was happy because it was going to, serve the Greek God Apollo. Swans were holy to Apollo, the god of poetry and song.
The story of the swan’s last song found a place in the works of other writers, including the early English writers Chaucer and Shakespeare. And the expression swan song has long been a part of the English language. At first, "swan song" meant the last work of a poet, musician or writer. Now, it means the final effort of any person. Someone’s swan song usually is also considered that person’s finest work.
A political expression with a similar meaning is "the last hurrah". The expression may be used to describe a politician’s last campaign, his final attempt to win cheers and votes. The last hurrah also can mean the last acts of a politician, before his term in office ends. Writer Edwin O’Connor made the expression popular in 1956. He wrote a book about the final years in the political life of a long-time mayor of Boston. He called his book The Last Hurrah.
Some language experts say the expression came from a name given to noisy supporters of Andrew Jackson, America’s seventh president. They cheered hurrah so loudly for Andy Jackson during his presidential campaign that they became known as the hurrah boys.
Jackson’s hurrah boys also played a part in the election to choose the next president. Jackson’s choice was his vice president, Martin VanBuren. A newspaper of the time reported that VanBuren was elected president: "... by the hurrah boys, and those who knew just enough to shout hurrah for Jackson. " President Jackson really heard his last hurrahs in the campaign of the man who would replace him in the White House.

According to Socrates, swans were ______.

A. holy birds
B. happy birds
C. pets of a Greek God
D. a symbol of poetry and song
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