①2Cu²⁺+2H₂O $\frac{\underset{\_}{电解}}{}$ 2Cu+4H⁺+O₂↑

②Cu²⁺+2Cl^﹣ $\frac{\underset{\_}{电解}}{}$ Cu+Cl₂↑

③2Cl^﹣+2H⁺ $\frac{\underset{\_}{电解}}{}$ H₂↑+Cl₂↑ 

④2H₂O $\frac{\underset{\_}{电解}}{}$ 2H₂↑+O₂↑

细胞膜具有一定的流动性，下列实例中能反映该特点的是（   ）
①变形虫伸出伪足              ②小肠绒毛上皮细胞对钾离子的吸收
③核糖体合成蛋白质进入细胞核  ④红细胞吸收葡萄糖
⑤吞噬细胞吞噬病菌            ⑥内质网形成囊泡与高尔基体膜融合

根据句意及汉语提示完成单词

①Could you please ____ (发送) a postcard to me when you're in Sydney?

② There used to be lots of sandstorms in Beijing years ____ (以前).

③Our country is paying more attention to people's ____ (健康).

④ More and more ____ (西方的) people are interested in Chinese doctors.

⑤If You Are the One(《非诚勿扰》) is one of the most popular ____ (节目) on TV now.