The Internet has made it possible ______ in a very convenient way around the world.

A．for people to communicate

B．for people communicating

C．for people communicate

D．for people to be communicated

甲状腺癌()
成骨肉瘤()
头颈部肿瘤()
肾脏透明癌()
消化系统癌()

A．肺部转移灶类似炎症样浸润影

B．淋巴管型转移

C．肺部转移灶内可见团块状或斑片状钙化

D．肺部转移瘤可见空洞

E．肺部转移灶以粟粒型多见