- May 15 Mon 2006 10:29
〝苦 悶〞
- May 13 Sat 2006 13:32
〝英文講稿（第十三週）〞
Ancient astronomers examined the night sky hoping to learn more about the universe. Because it, scientists have researched what conditions are like beyond Earth’s atmosphere, and what effects space travel has on the human body. Many experience physiological and psychological problems when they return to Earth. Some of these ailments are short-lived; others may be long-lasting.
In the gravity-free environment, the body cannot distinguish up from down. Throughout the duration of a mission, astronauts’ bodies experience some potentially dangerous disorders. For example, bone density can decrease at a rate of 1 to 2 percent a month and, as a result, many astronauts are unable to walk properly for a few days upon their return to earth. Exposure to radiation is another serious hazard that astronauts face. Without the earth’s atmosphere to protect them, astronauts can be exposed to intense radiation from the sum.
- May 07 Sun 2006 00:44
〝我的公車司機是飆仔〞
- May 04 Thu 2006 20:20
↖ばが★一份點名遊戲
- May 04 Thu 2006 00:53
↖ばが★這樣才叫朋友
- May 04 Thu 2006 00:48
▣ 接受缺點更接近完美
Past (9)
