《乡愁》中“邮票”“船票”“坟墓”“海峡”这四种意象前表修饰、限制的形容词和数量词有什么特点？它们共同突出了这四样东西的什么特征？

A. 加工承揽合同的计税依据为加工货物的同类售价金额
B. 财产租赁合同的计税依据为租赁金额
C. 仓储保管合同的计税依据为所保管货物的金额
D. 建设工程勘察设计合同的计税依据为收取的费用

A. The sender of the message.
B. The receipient of the message.
C. The sender’s administrator who provides the sender with the PGP program.
D. A third party that belongs to what’s often known as "web of trust"， that can verify the relationship between the user and the key.
E. The vendor of the PGP program.

A. 正确
B. 错误

A. 正确
B. 错误