图中牛的乳汁中含有人乳铁蛋白,下列有关此牛的叙述错误的是( )
A.它是仿生技术的产物
B.它的这一特异性状能够遗传
C.它具有 * * 生物反应器
D.它是转基因牛
答案:A
The settlement is home to nearly 1,000 people, many of _____ left their village homes for a better
life in the city. [ ]
A. whom
B. which
C. them
D. those
长期卧床对肺部的影响是()
A.肺的顺应性变大
B.肺活量下降
C.胸廓外部阻力变小
D.气体交换增加
E.呼吸运动加大