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
中国古代曾有一种"白马非马"论，这种观点割裂了（）。
A. 一般和个别的辩证关系
B. 肯定和否定的辩证关系
C. 感性认识和理性认识的辩证关系
D. 绝对真理和相对真理的辩证关系
The most significant finding of the original research was______.
A. lighting had no consistent effect on production
B. production sometimes increased when lighting was reduced to the level of ordinary moonlight
C. that lighting was no more important than the other factors of temperature and humidity
D. the results were unexpected and confusing
微信支付 
支付宝支付