(5分)用一只量筒收集CH4和Cl2的混合气倒扣在盛水的水槽中,用灯光照射量筒中的混合气体,一段时间后,可以观察到量筒内气体颜色 ,量筒壁上出现 ,量筒内水面 ,量筒中的水溶液呈 性。该反应的化学方程式是 (只写第一步)。 In the near future, China will increase supply of smaller houses, ________ to help lowincome familiesto buy houses of their own.
[ ]A. aims B. being aimedC. aiming D. having aimed