Although B. Though C. Even D. As
A. especially B. significantly C. potentially D. powerfully
A. who B. where C. which D. that
A. method B. tone C. fashion D. System
A. 小型、中型和大型 B. 网状、环状和链状 C. 层次、网状和关系 D. 独享、共享和实时
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