[填空题]Manufacturers mentioned in the passage were obliged to make the best of warning labels so as to ______.

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[单项选择]Passage Two

There were two widely divergent influences on the early development of statistical methods. Statistics had a mother who was dedicated to keeping orderly records of governmental units (state and statistics come from the same Latin root, status) and a gentlemanly gambling father who relied on mathematics to increase his skill at playing the odds in games of chance. The influence of the mother on the offspring, statistics, is represented by counting, measuring, describing, tabulating, .ordering, and the taking of censuses - all of which led to modern descriptive statistics. From the influence of the father came modern inferential statistics, which is based squarely on theories of probability.
Descriptive statistics involves tabulating, depicting, and describing collections of data. These data may be either quantitative, such as mea
A. It leads to increased variability.
B. It solves all numerical problems.
C. It simplifies unwieldy masses of data.
D. It changes qualitative variables to quantitative variables.

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[单项选择]
Passage One

Jeans were invented a little over a century ago and are currently the world’s most popular, versatile garment, crossing boundaries of class, age and nationality. From their origins as pure workwear, they have spread through every level of the fashion spectrum, and are embraced internationally for their unmatched comfort and appeal.
In the mid 1940s, the Second World War came to an end, and denim blue jeans, previously worn almost exclusively as workwear, gained a new status in the U. S. and Europe. Rugged but relaxed, they stood for freedom and a bright future. Sported by both men and women, by returning GI’s and sharp teenagers, they seemed as clean and strong as the people who chose to wear them. In Europe, surplus Levi’s were left behind by American armed forces and were available in limited supplies. It was the European
A. soldiers
B. workmen
C. teenagers
D. cowboys

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[简答题]Why is Lawrence Barrentt mentioned in the passage

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[单项选择]Why is Thomas Jefferson mentioned in this passage
A. As an example of interracial intimacy.
B. Because he was a slave owner and was strongly against interracial marriages.
C. Because he was one of the early advocates of interracial marriages.
D. Because he married a black woman.

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