02 科学技术（5 / 13）

agricultural products, aend the refreshing time.

优点：可增加作物单位面积产量；可以降低生产成本；通过转基因技术可增强作物抗虫害、抗病毒等的能力；提高农产品的耐贮性，延长保鲜期。

disadvantages: a number of studies show that geically modified foods will damage the immune fun of mammals.

弊端：多项研究表明，转基因食品对哺乳动物的免疫功能造成伤害。

航天技术

dialogue

its time for lunch. kim and matt are talking while walking to the dining hall.

该吃午饭了。金和马特在去餐厅的路上边走边聊。

kim: it is said that the shenzhou-8 manned spaceship launched in november.

金：据说神州八号在11月份发射升空了。

matt: yeah, ive heard of it. the aeronautical teology of our try is developing at a very fast speed now. the tiangong-1 have just launched successfully iember.

马特：是啊，我听说过了。我们国家的航天技术现在发展得非常快，天宫一号9月份刚刚发射成功。

kim: tiangong-1 is the first unmanned space module in a. it is really a breakthrough.

金：天宫1号是中国第一艘无人太空舱。这真是一个突破。

matt: yes, it is worth memorizing. and the shenzhou-8 and the tiangong-1 pleted the first space dog.

马特：对，很值得纪念。神州八号和天宫一号完成了第一次太