A:肾小管
B:肾小球
C:入球小动脉
D:肾小囊
用水平力推矿泉水瓶的下部,矿泉水瓶沿桌面滑动,改用同样大小的水平力推矿泉水瓶的上部时,矿泉水瓶被推倒,这说明力的作用效果与( )
where, their, but, tidy, under
Hello, I'm Anna. This is my room. It is not very big ____it's comfortable(舒适的)and it's very ____.This is my bed. My desk and my chair are next to (在 ……旁边)the bed. ____are my pens? They're in my pencil box. What's that ____the desk? It's a model plane. My parents are Alan and Mary, and ____room is next to mine.
某同学设想在人的基因组里“嫁接”绿色植物光合作用基因,人就不用吃饭了.实现这种构想的生物技术最可能是( )
①市场机制决定资源配置,通过利益杠杆引导企业经营
②商品价格受制于成本,经营成本下降,促使蟹价平民化
③市场需求影响企业的销售策略,对其产品定价起决定性作用
④价格受供求关系影响,围绕价值上下波动是价值规律的基本内容