Ann: What are you going to do this afternoon?

Ken: I'm going to buy some DVDs about Quanzhou Maritine Silk Road.

Ann: ____ Why not go to the Film Fans' Room?

Ken: The Film Fans' Room? ____

Ann: It is a place where students can exchange their DVDs with others. I think you can get what you want there.

Ken: ____ How can I get there?

Ann: It's next to Donghu Cinema. You can take the No. 13 bus.

Ken: OK. ____

Ann: There is one just outside Huaqiao University. You can get on the bus there.

Ken: Thank you very much.

Ann: ____

将刚采摘的新鲜蓝莓分成两等份，一份用高浓度的CO₂处理48h后，贮藏在温度为1℃的冷库内，另一份则始终在1℃的冷库内贮藏。从采摘后算起每10天取样一次，测定其单位时间内CO₂释放量和O₂吸收量，计算二者的比值得到下图所示曲线。下列有关分析错误的是

“人们参加社会的理由……是希望由此可以制定法律，树立准则，以保卫一切社会成员的财产。……当立法者们图谋破坏人民的财产或贬低他们的地位，使其处于专断权力下的奴役状态时，立法者就使自己和人民处于战争状态。人们因此就无须再予以服从，而只能寻求上帝给予人们的抵抗强暴的共同庇护。”这段话鲜明地体现了下列哪位思想家的观点（  ）

达尔文的自然选择学说的内容包括____ ， ____，​____，____。