A common measure of a nation's telecommunications infrastructure is
A) Internet
B) radio
C) Internet connections
D) telephone
E) telegraph
D
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Which of the following is true about levees?
A) They are a reliable way to protect an area from flooding. B) To be called a levee, a feature needs to be at least partly constructed by humans. C) A levee can trap water on the floodplain after the flood has subsided. D) None of these are correct.
What is an earthquake?
A. a release of energy B. a fault C. a seismic wave
In the last 50 years of the 20th century, world population grew from ________ billion to over 6 billion.
A. 2.5 B. 4 C. 3.5 D. 5 E. 3
________ was a sustained attack on Chinese traditions and cultural practices
A) The Long March B) The Great Leap Forward C) The Cultural Revolution D) The Four Modernizations E) none of the above