对身份证明系统的要求之一是（）
A、具有可传递性In1995,anaverageof_______ofdomestictravelerswentonsightseeinginChina.
名词解释：preferredstock
NeitherEnglishnorChinese________difficulttolearn.
Inourdepartment,everystudent_________after-schoolactivities.
______thenewplancanbecarriedoutwillbediscussedatthemeetingtomorrow.
