10．Low-carbon life style is of great benefit to improve the world environment．

分析 低碳生活方式對于改善世界的環(huán)境很有幫助．

解答 答案：benefit．
分析句型結(jié)構(gòu)可知，本句需要使用be+of+名詞，相當(dāng)于be+該名詞所對應(yīng)的形容詞；be of great benefit等于be very beneficial；故答案為benefit．

點(diǎn)評 首字母填空題考查的是詞匯的記憶和運(yùn)用能力，平時要注意積累和運(yùn)用．同時還要注意提示字母．

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