Whats the central topic of the passage？
Air pollution.
Bonfires.
C. Solid waste.
D. Bonfires and the law.
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According to the first paragraph, the Newark Earthworks are______.
A. the product of some giant celestial spirit who went crazy with an Etch A Sketch
B. a series of huge geometric mounds that the Hopewell people created two millennia ago
C. the Octagon and a perfect 20-acre circle which it is connected to
D. the structure that is precisely aligned with the 18.6-year lunar cycle"s northernmost moonrise
In the passage, the author intends to______.
A. talk about the positive effects of social network on teenagers
B. discuss social networks and people"s daily life
C. probe into the meanness in teenagers of social networking sites
D. remind teenagers of the damaging results of online bullying
All of the following about Karsh are mentioned in the passage EXCEPT that______.
A. he was born in Armenia and died in Boston
B. his uncle, George Nakash, was also a famous photographer
C. he took photographs for the British royal family in 1940s
D. he was listed among the most notable people of the last century in Who"s Who
The most popular product(s)at Googles developer conference in San Francisco was/were______.
A. a tablet computer
B. a wireless media player
C. the spectacles
D. smartphones
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