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 b

[单选题]以下对英语“John has written the book”这句话中的语法意义的表述，不正确的一项是（）。A . 现在时和完成体B . 主格和宾格C . 陈述句主动态D . 人称和数一致

[单选题]D．efending the Theory of Evolution Still Seems NeededJudith S. Weis, a biology professor who serves as president of the American Institute of Biological Sciences (AIBS) is leading a nationwide effort to "defend" the theory of evolution. Weis leads

[单选题]John Maginn, an investment researcher, who is a CFA charterholder, takes a

[单选题]31． The book is very interesting． It is well worth_______．A． readingB． to readC． being readD．to be read

[单选题]A new theory is ________ in his latest book.A.put up B.put on C.put off D.p

[单选题]May I take this book out of the reading room? No,you . You read it in here. ( )A． mightn’tB． won’tC． need’tD． mustn’t

[问答题]I will finish reading this book in a week.

[单选题]May I take this book out of the reading room?No,you_______ . You read it in here.A． mightn’tB． won’tC． need’tD． mustn’t

[单选题]The persons who know ____ of Charles Dickens are likely to win the free trip.A． the birth dateB． the home townC． the major worksD． the writing style