The word "optimum" underlined in Paragraph 1 means______.
A. positive
B. favorable
C. best
D. alternate
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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
According to the passage, what changed children's publishing in 1774？
A. The Newberry Medal.
B. Some books began to be produced mainly for children to enjoy.
C. Some books had attractive formats, quality illustrations and sturdy bindings.
D. Some books no longer contained religious instruction rules of behavior, ethical messages and moral platitudes.
The assumption that "leaders are born, not made" has lost credibility because______.
A. better theories have since been developed
B. there were too many exceptions to the rule
C. it was found not to be the most important factor
D. it was not proved after World War II
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