John is reading an interesting book on evolution theory which was written by Charles Darwin，who was a British naturalist who developed a theory of evolution based on natural selection.What design feature of language is reflected in the example？( )

单选题

John is reading an interesting book on evolution theory which was written by Charles Darwin，who was a British naturalist who developed a theory of evolution based on natural selection.What design feature of language is reflected in the example？( )

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单选题

To write up his novel, John is looking for an environment free ___ outside distraction.

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多选题

-It is said that John’s paper got an A.-He deserves it. He ________a lot before he handed it in.

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单选题

Jane has two brothers; one is John,and （) is Henry.

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单选题

John was_______he lay down for an hour before dinner.

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