题目

(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
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