Turn the following sentence into English and write your sentence on the answer sheet.
各国的科学家意识到威胁人类生存环境的那些严峻事实，向人类发出了严重的警告。
【正确答案】：
AWARE OF THE HARSH FACTS CONCERNING THE DANGERS TO THE ENVIRONMENT, SCIENTISTS IN VARIOUS COUNTRIES HAVE SOUNDED A SERIOUS WARNING TO MANKIND.
【题目解析】：
本题考查常见名词短语的使用。
意识到···：be aware of···；严峻事实：the harsh fact；严重的警告：a serious warning。
句子结构：主干：科学家向人类发出了警告；“意识到威胁人类生存环境的那些严峻事实”为伴随状语。