可作为血吸虫病诊断抗原的有:()
A.肠相关抗原
B.膜相关抗原
C.可溶性虫卵抗原
D.尾蚴抗原
E.成虫抗原
参考答案:A, C
It is reported that the scientists in our country are _____ all possible ways to control H1N1 flu. [ ]
A. operating
B. designing
C. replacing
D. exploring
如果股东提供的资本与公司资本总额相比,所占比例较低,则对债权人较为有利。( )