使用车用乙醇汽油，汽车是否需要改动？
参考答案：
使用车用乙醇汽油，汽车不需要改动。
I feel it is you as well as your wife that for your son’s bad performance at school.
A．are to blame
B．is going to blame
C．are to be blamed
D．is to be blamed
请用化学方程式表示下列反应原理：
（1）红磷在空气中燃烧：______．
（2）实验室里用稀盐酸溶液中和氢氧化钠溶液：______．
