下图为某生态系统的食物网,请据图回答:
保护生物多样性最为有效的措施是()。
参考答案:建立自然保护区
After the Asian Games, ______ people came to Guangzhou for a visit during holidays. [ ]
A. thousand
B. thousands of
C. five thousands
D. five thousands of
捏脊疗法通过对督脉与膀胱经捏拿,达到调整脏腑功能的目的。常用于治疗()
A.疳气、泄泻
B.咳嗽、哮喘
C.五迟、五软
D.心悸、怔忡
E.遗尿、尿频