In the text, the "Dark Age of the Universe" refers to______.
A. the formation of the first stars
B. a period during which black holes were prominent
C. a period following the big bang
D. the time before the universe began
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Using the Internet has helped the transportation industry______.
A. communicate more efficiently with their customers
B. communicate with suppliers
C. reduce costs
D. reduce the gross domestic product
Which of the following would be the best title for the text?
A. People have bias over stress
B. The upside of stress, long ignored but true
C. The mechanism of posttraumatic growth
D. Stress" s harm to people" s health