单项选择题

This passage mainly tells us（）

A．past efforts to estimate deforestation in the Amazon have completely failed
B．that damages caused by logging and fires threaten the Amazon rain forest
C．Amazon rainforest disappears faster than thought
D．that satellite images are made use of for estimating deforestation

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单项选择题

What cannot be concluded about the satellite images（）

A．Satellite images are useless for calculating forest loss.
B．Satellite images cannot detect forest loss by selective logging.
C．Satellite images were not accurate because of changing environmental factors.
D．Satellite images showed half or less of the actual deforestation in Brazilian Amazon.

单项选择题

What can we learn from this passage（）

A．Damages from fire and logging in the Amazon rainforest vary significantly from year to year.
B．The worsening of the global environment is chiefly due to deforestation.
C．It is a hard work to determine the accurate deforestation in the Brazil's Amazon region.
D．Farmers should be blamed for the worsening of the global environment.