单项选择题

The U. S. is known as a great "melting pot" because ______.

A．the weather in most part of land is hot
B．The land has several famous volcanoes
C．Its people are of different nationalities from all over the world
D．Its people are very friendly

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单项选择题

When the president of the United States is impeached, ______.

A．The House of Representatives acts as the jury.
B．The Senate acts as the jury.
C．The Supreme Court acts as the jury.
D．The vie president acts as the jury.

单项选择题

Peterloo Massacre happened in the city of_____.

A．London
B．Boston
C．Manchester
D．New York