单项选择题

When plastics were invented a hundred and twenty years ago, _____________.

A．people found they were cold materials
B．their shapes were set permanent
C．people accepted them at once
D．they did not enjoy immediate popularity

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单项选择题

Which of the following statements is NOT TRUE according to this passage

A．There has been ups and downs in the development history of plastic technology.
B．Nowadays plastics help people to live a more convenient life in modern world.
C．Since plastic technology does not have a long history, there are no plastic antiques at all.
D．Collecting cheap but beautiful plastic antiques can be fun sometimes.

单项选择题

Which of the following groups of adjectives best concludes the characteristics of plastics

A．Inexpensive, convenient and historic.
B．Disposable, rare and interesting.
C．Inexpensive, convenient and disposable.
D．Rare, beautiful and unbreakable.

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