How would you like to live in a land where the sun shines day and night? There are place in the polar regions where, for North, the sun never sets! This is known as the land of the Midnight Sun. This period of sunlight can last up to six months.

This happens because the Earth tilts(倾斜). When the North Pole is tilted towards the sun, it has constant (不断) daylight. As the same time, the South Pole is tilted away from the sun. It is in darkness.

Six months later, the South Pole tilts to the sun and has constant daylight. Then the North Pole is tilts away. It has darkness.

小题1: Where can you see the Midnight Sun?

小题2:How long can the period of sunlight last?

小题3:Why can we see the Midnight Sun?

小题4:When there is Midnight Sun in the North Pole?

小题5:What happens in the South Pole?

英国革命和法国大革命“不仅反映了它们本身发生的地区即英法两国的要求，而且在更大得多的程度上反映了当时整个世界的要求”。这表明，英法资产阶级革命的成功标志着（）

A.新社会制度的胜利

B.工业生产方式的确立

C.资产阶级革命的胜利

D.封建君主制度的衰亡