The committee report of National Academy of Sciences in Washington reveals that ________.
A. ice from Antarctica and Greenland is appropriate to show the change
B. carbon dioxide is released mainly from the fuel
C. level of carbon dioxide increases with global temperatures
D. carbon dioxide is helpful for tree growth
The author implies that a work of art is probably judged on the basis of its ________.
A. universality of human experience truthfully recorded
B. popularity and critical acclaim in its own age
C. openness to varied interpretations, including seemingly contradictory ones
D. avoidance of political and social issues of minor importance
干燥能使细菌的物质变性，此物质是
A. 多糖
B. 脂质
C. 蛋白质
D. 单糖
E. 核酸
New ideas have been put into practice ______ he was elected our leader.
A. for
B. after
C. since
D. hence
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