患者男，21岁，因“腋窝淋巴结肿大”来诊。穿刺病理：霍奇金淋巴瘤，结节硬化型。治疗后患者达到完全缓解，出院随访1年后复查发现纵隔占位，再次入院。

患者出现面部水肿，伴呼吸困难、声嘶和喘鸣，平卧或弯腰时症状加重，考虑的并发症为（）

A.上腔静脉综合征

B.心功能不全

C.肺部感染

D.肿瘤溶解综合征

E.自身免疫性溶血危象

The United States has historically had higher rates of marriage than those of other industrialized countries. The current annual marriage (51) in the United States—about 9 new marriages for every 1,000 people—is (52) higher than it is in other industrialized countries. However, marriage is (53) as widespread as it was several decades ago. (54) of American adults who are married (55) from 72 percent in 1970 to 60 percent in 2002. This does not mean that large numbers of people will remain unmarried (56) their lives. Throughout the 20th century, about 90 percent of Americans married at some (57) in their lives. Experts (58) that about the same proportion of today’s young adults will eventually marry.

The timing of marriage has varied (59) over the past century. In 1995 the average age of women in the United States at the time of their first marriage was 25. The average age of men was about 27. Men and women in the United States marry for the first time at an average of five years later than people did in the 1950s. (60) , young adults of the 1950s married younger than did any previous generation in U. S. history.

52().

A.potentially 

B.intentionally 

C.randomly 

D.substantially