中国近代史上，大片领土被割占成为中国人心中永远的痛。下列条约中，开资本主义列强宰割中国先例的是（   ）

观察如图，并回答相关问题：

以下现象与电化学腐蚀无关的是(　　)

短文改错。

     Mother's Day is a popular holiday in many country____. It is on the second Sunday in May（五月）It are ____ a day to thank others. In ____ that day we give flowers, cards or other present____  to our mothers. On the card, we usual ____ write “Thank your____, mother”, “To the best father____ in the world”, “Best wish ____ for Mother's Day” and so on. On Mother's Day, we help us____  mothers do a lots ____ of house work. We try to make our mothers happy.