"Carbon neutral" in this passage refers to______.A．involving no use of coal as fuelB．produ

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This passage mainly discusses ______ .A．the functions of carbon dioxide and waterB．the rol

In C language, a （67） is a series of characters enclosed in double quotes.（67） A. matrix B

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The purpose of this passage is likely to______.A．warn people about the effects of carbon e

The author quotes Hilton Kramer in Para. 2 most probably in order to illustrateA．realism i