A:据悉,一种新型的袖珍电脑将亮相本届科博会,它采用语言输入、太阳能供电,具有高雅、时尚、方便、环保的功能和作用。
B:瑞典和芬兰研究人员最近发现某些癌症存在“基因开关”,这一成果有助于未来的癌症防治,但距离相应的药物的问世还需要很多年的深入研究。
C:做任何事情都应该上心,不然很难取得应有的成绩,比如说学习,你成绩的好坏在很大程度上取决于你自觉刻苦的程度。
D:他在英语国家工作一年,不但进一步提高了英语交际能力,还参加过相关机构组织的阿拉伯语培训,掌握了阿拉伯语的基础应用。
说说生活中那些事情可能会发生,那些事情一定会发生,那些事情不可能发生?
My cousin Sandy is1English girl. Her2name is White. She is 12. The girl is3. In her room, her books and tape player4in the bookcase. Her pencil box is on the5. Her ruler is on the desk, too. And a set 6 keys are in her pencil box. A baseball is under the desk,7 it's not Sandy's. It's her brother8. Sandy has a computer. 9 on the table. There is a photo on the wall. Two girls are in the photo. Do you know10the two girls are? Well, they are Sandy's good friends, Mary and Anna.
甲、乙为人口超10亿的国家,下图示意两国2015年人口年龄结构。推测乙国人口年龄构成的影响( )