下列某城市是中国近代史上最早被迫开放的五个通商口岸之一，同时又是改革开放后最早设立的四个经济特区之一。该城市是（    ）

根据短文内容，判断正确还是错误。

     Lynn has many books and toys. She has English books, Chinese books, word books and comic books. The English books and word books are thick. The Chinese books and comic books ard thin. She likes reading English books and word books. She has a boy bear, a toy dog and a toy cat. Her toy bear is hard. Her toy dog and toy cat are soft. She likes them very much.

“鸠占鹊巢”这一成语说明“鸠”在生殖和发育过程中，没有经历的过程是（　　）

在如图所示的电路中，电源电压恒定，L₁、L₂均标有“6V 6W”字样（设灯丝的电阻不变）。当S₁、S₂闭合时，灯L₁正常发光；则S₁闭合，S₂断开时，两盏等的总功率是（   ）