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英语六级
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单选题

A．Pictures of triangles.
B．Calculations using square numbers.
C．Measurements of angles.
D．Greek symbols.

参考答案B
解析:What was on the Mesopotamian tablet mentioned in the talk?
细节题。根据It concerns an ancient Mesopotamian tablet that has some calculations on it using square  numbers．可知。涉及运用平方数计算。因此，正确答案是B。
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单选题

A．They taught the Mesopotamians about square numbers.
B．They were less advanced in mathematics than the Mesopotamians.
C．They did not use square numbers.
D．They knew how to measure angles.

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单选题Questions  are based on the following passage.
Do people get happier or more foul-tempered as they age? Stereotypes of irritable neighbors 26, scientists have been trying to answer this question for 27,and the results have been conflicting. Now a study of several thousand Americans born between 1885 and 1980 28 that well-being indeed increases with age but overall happiness depends on when a person was born. 29 studies that have compared older adults with the middle-aged and young have sometimes found that older adults are not as happy. But these studies could not 30 whether their discontent was because of their age or because of their different life experience. The new study, published online January 24 in Psychological Science,31 out the answer by examining 30 years of data on thousands of Americans, including psychological measures of mood and well-being, reports of job and relationship success, and objective measures of health.
The researchers found, after controlling for 32 such as health, wealth, gender, ethnicity and education, that well-being increases over everyone's lifetime. But people who have lived through extreme 33, such as the Great Depression, start off much less happy than those who have had more comfortable lives. This finding helps to explain why past studies have found 34 results--experience matters, and tough times can influence an entire generation's happiness for the rest of their lives. The good news is, no matter what we've lived through, we can all look forward to feeling more 35 as we age.
A. reveals
B. decades
C. besides
D. content
E. tough
F. teased
G. previous
H. conflicting
I. discern
J. establish
K. variables
L. ruled
M. aside
N. hardship
O. Measures
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