224. He contentds that primitive life once existed on Mars. |
225. The crew is busy preparing for the voyage into outer space. |
226. They conducted a series of experiments under zero gravity. |
227. |
228. |
229. |
230. |
231. The equator divides the globe into two hemispheres. |
232. I think it's cruel to trap animals for fur coats. |
233. |
234. |
235. |
236. |
237. |
238. |
239. |
240. |