细支气管充气征（）。

A.瘤细胞浸润及间质反应

B.肿瘤内残存正常含气肺组织

C.肿瘤瘢痕收缩

D.瘤内含气、扩张的细支气管

E.肿瘤钙化或包埋原有钙化灶所致

Which of the following statements is NOT true of the passage

A．International trade has become an important part of national development.

B．Summit talks will be held to discuss problems in international trade.

C．Developing countries benefit more from international trade than development aid.

D．The Doha Development Agenda has made development its pivotal concern.