造成动物物种之间差异的是[ ]
A.各自的遗传物质
B.各自的栖息地
C.对环境的适应能力
D.人类的保护措施
答案:A
Duncan, ______ NBA star, is one of _______ few basketball players who are very popular to many of
his Chinese fans.[ ]
A. an; the
B. an; a
C. the; the
D. the; a
在下列哪项范围内冠状动脉灌注压具有自动调节功能()
A.冠状动脉灌注压38~105mmHg
B.冠状动脉灌注压53~135mmHg
C.冠状动脉灌注压75~165mmHg
D.冠状动脉灌注压60~150mmHg
E.冠状动脉灌注压90~180mmHg