According to the scientists, because of some damage, now Canada's forests ______.
A. are greatly damaged by global warming
B. approach the threatening line
C. take in less carbon dioxide than they produce
D. become net carbon sources
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By the statement that "genius is far too independent of convention to abuse it" the author
A. an artist does not understand conventional morality
B. Philistines expect geniuses to be morally conventional
C. Beethoven lived within a conventional moral code
Don Giovanni abuses conventional standards
According to this passage, today's fruits ______.
A. like a lot of rain
B. need a lot of fertilizer
C. remain the same in size and taste
D. can stay fresh for a long time
Beethoven was distressed by his nephew's ______.
A. extravagance
B. unwillingness to do his best
C. joining the army
D. failure to enter polytechnical school
The author mentions which of the following as advantages of amorphous materials for solar
A. The relative thinness of amorphous materials.
B. The cost of amorphous materials.
C. The size of solar cells which can be made of amorphous materials.
D. All of the above.
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