我国宪法规定，社会主义制度是中华人民共和国的（）。
A. 具体制度
B. 政治制度
C. 经济制度
D. 根本制度
We can infer from this passage that the author believes ______.
A. the real benefits of bathing are psychological not hygienic
B. bathing is superior to taking shower
C. buying soap is a waste of money
D. we do not need to bathe as much as we do currently
An application software is any program (68) to perform a specific function directly for the user or, in some cases, for another application program.
A. design
B. designing
C. designed
D. praticed
下列关于因特网的网络互联层的说法， (28) 是正确的。
A. IP协议除了提供端对端的分组分发功能外，还提供了标识主机和网络的地址功能
B. p协议主管在两个主机之间建立直接的链路
C. ICMP协议作为TCP协议的附加，来报告网络的故障
D. 主机和网络的地址功能是由TCP层主管和识别的
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