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

The word laconic is_____.

A．onomatopoeically motivated
B．morphologically motivated
C．semantically motivated
D．etymologically motivated

单项选择题

Close by Westminster Abbey on the riverside stands the Palace of Westminster, generally known as the ______.

A．House of Parliament
B．National Gallery
C．British Museum
D．Castle