题目

It was in the past two years that Aaron Segura was always sinking at West Mesa High School in Albuquerque,  New Mexico. The 16­year­old student was __1__ in golf, but his __2__ was another matter. Aaron was “just walking through the chapters hard” in courses like chemistry, his grades were low, and he was __3__ to dropping out. It was not that Aaron didn't have __4__； it simply didn't exist in his large, impersonal public high school. Then his mother heard about Albuquerque's Charter Vocational High School(特立职业高中), a place where students __5__ plenty of one­on­one attent25℃、101 kPa下，2g氢气燃烧生成液态水，放出285.8kJ热量，表示该反应的热化学方程式正确的是（ ）A. 2H2(g)+O2(g) == 2H2O(1) △H＝ ―285.8kJ／molB. 2H2(g)+ O2(g) == 2H2O(1) △H＝ +571.6 kJ／molC. 2H2(g)+O2(g) == 2H2O(g) △H＝ ―571.6 kJ／molD. H2(g)+1/2O2(g) == H2O(1) △H＝ ―285.8kJ／mol