题目

  Five people won the “China’s Green Figure” award, a title          to ordinary people for their contributions to environmental protections.      A. being given    B. is given      C. given         D. was given 答案：C10．写出下列方程式：（1）铁丝燃烧：3Fe+2O2$\frac{\underline{\;点燃\;}}{\;}$Fe3O4（2）氢气燃烧2H2+O2$\frac{\underline{\;点燃\;}}{\;}$2H2O．