Talking about the preference for blue eyes, the author argues that ______.
A. blue eyes are purely inherited
B. few people will have blue eyes
C. blue eyes will be less sexy
D. people with blue eyes are usually wealthy
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在活动难度较大时，动机强度越强，工作效率水平（）。
A. 低
B. 高
C. 中等
D. 不变
The tone of this passage is mainly.
A. humorous
B. of a matter-of-fact
C. bitter and ruthless
D. emotional
班主任就学生中发生了显著变化的某个方面进行总结，这属于（）。
A. 专题总结
B. 全面总结
C. 学期总结
D. 具体总结
The main purpose of the passage is to ______.
A. give a brief introduction to the growth of the mass newspaper
B. trace the cause of the failures of the six-cent papers
C. find out which was the most significant newspaper of that time
D. show how a mass-appeal newspaper made a great fortune
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