From the missionary's manuscript. we may infer that ______.
A. the great signal drums were very popular there
B. people there were hostile to the European strangers
C. the Amazon River area was densely populated then
D. the tribes along the river were always at odds
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According to the passage, sending people to Mars is ______.
A. economically possible
B. technologically feasible
C. out of scientific incentive
D. all of the above
A．is brokenB．will breakC．will be brokenD．will have broken
A. is broken
B. will break
C. will be broken
D. will have broken
The everyday objects recorded and collected by the successors to the first explorers may reveal ______.
A. where these objects came from
B. how they rotted in a tropical climate
C. a glimpse of the Incan civilization
D. the vicissitude of Amazon cultures
According to the passage, the practice of installment ______.
A. was adopted by manufacturers
B. made consumer credit easier
C. promoted consumers' expectations
D. ultimately led to materialism
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