A. About two thousand and two hundred old women took part in the study.
B. Eleanor Schwarz's research program was about men and women who suffered from diabetes.
C. Over one fifths of the women never got married.
D. Eleanor Schwarz's results seem more reliable.
A. human attention is a scarce resource B. city life can make people very tired
C. the city is an engine of intellectual life D. an urban environment is damaging to the brain
A. The city inspires talented people. B. The city hurts your brain.
C. The city has many pleasures and benefits. D. The city seriously affects the natural balance.
A. Ice and Iow temperature. B. Bacteria and oxygen.
C. Soil and energy. D. Acid and water.
A. letters B. photographs C. paintings D. objects
A. French. B. Greek. C. Roman. D. German.
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