下图是某种生态系统中食物网简图。图中甲至庚代表各种不同的生物，请根据图分析回答：
生物甲和已的关系是（）
参考答案：捕食和竞争
- . hard Bill is working!-Yes. He's the most hard-working in our class.*
A．What
B．How
C．What a
D．How a
— did he hiccup?
— He hiccupped for 6 years. [ ]
A. How
B. How long
C. How much
D. How far
