题目内容

Over the next two decades he wrote a succession of widely acclaimed plays ________ may be categorized roughly into three groups: histories, comedies, and tragedies or tragicomedies.

A. those
B. which
C. what
D. where

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Jazz is truly American music and arguable the most outstanding contribution ________ the United States has made to the art of music.

A. which
B. it
C. what
D. /

Some computers are capable of generating animated graphics ________ rival output of specialized equipment that cost hundreds of thousands of dollars.

A. which
B. they
C. what
D. that

The art of movement is among the oldest of the arts, ________ is not really surprising, for so much about us is in perpetual motion.

A. it
B. What
C. that
D. which

体内复制合成DNA的模板是()。

A. 亲代DNA分子解开的两条单链分别作为模板
B. 亲代DNA分子解开的一条单链作为模板
C. DNA的某一区段
DNA的某一区段的DNA单链
E. RNA

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