The word " sturdy" underlined in Paragraph 1 means______.
A. robust
B. ornate
C. soft
D. hard
查看答案
What impact did color printing have on children's books？
A. Sales increased by the middle of the 19th century.
B. Rough illustrations were now more appealing.
C. Illustrations told more of the story and were more appealing.
D. Books became more amusing.
系统科学产生的意义在于它（）。
A. 抛弃了唯物辩证法
B. 代替了唯物辩证法
C. 丰富了唯物辩证法
D. 高于唯物辩证法
According to the passage, the early books of etiquette, fables, and legends could not really be considered children's literature because______.
A. the children couldn't read them
B. the early books were too heavy for children to use
C. the stories were too difficult for children to appreciate
D. the stories were for education rather than enjoyment
The word "optimum" underlined in Paragraph 1 means______.
A. positive
B. favorable
C. best
D. alternate
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