通常由( )、变更证明书和测量文件作为地籍变更的资料。
A．原丈量数据 B．变更地籍的属性信息C．变更清单 D．地籍调查通知书
参考答案：C
真核生物mRNA前体的加工过程不包括（ ）
A．5末端加帽
B．3 末端加多聚A尾
C．甲基化修饰
D．磷酸化修饰
E．剪切去除内含子并连接外显子
It is encouraging to see millions on the earth who had nothing but a record of misery and hunger ____
the chance to improve their life.[ ]
A. having
B. to have
C. have
D. who have
