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问题 单项选择题

下列关于蒸发的说法正确的是

A．蒸发能在沸点温度下进行，也可以在低于沸点的温度下进行

B．蒸发的目的是提高溶液的温度

C．在沸点温度下进行的蒸发称为沸点蒸发

D．蒸发可以促进溶剂的析出

E．蒸发不可以在亚沸状态下进行

答案

参考答案：A

完形填空

阅读下面材料，用不多于3个单词的正确形式填空

Are you facing a situation that looking impossible to fix?

In 1969, the pollution is terrible along the Cuyahoga River near Cleveland, Ohio. It ______小题1:(be)imaginable that it could be ever be cleaned up. The rive was so polluted that it ______小题2:(actual) caught fire and burned. Now year late,this rive is one of_______小题3:most outstanding examples of environmental cleanup.

But river wasn’t changed in a few days_____小题4:even a few months. It took years of work _______小题5:(reduce) industrial pollution and clean the water. Finally, that hard work paid off and now the water in the river is______小题6:(clean) than ever.

Maybe you are facing an impossible situation. Maybe you have a habit _____小题7:is driving your family crazy. Possibly you drink too much or don’t know how to control your credit card use. When you face such impossible situation, don’t you want a quick fix and something to change immediately.

While there are_______小题8:(amaze) stories of instant transformation, for most of us the  _______小题9:(change) are gradual and require a lot of effort and work, like cleaning up a polluted river. Just be_______小题10:(patience)
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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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