正确答案: B

宣告其死亡

题目：赵某婚后下落不明5年，其父母可以申请法院( )。

解析：B。本题考查宣告公民失踪和宣告死亡的关系。根据法律的规定，只要具备法定条件就可以宣告公民死亡，宣告失踪不是宣告死亡的必要条件。

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举一反三的答案和解析：

[单选题]哪一种闭合性损伤最容易发生急性肾衰竭 （ ）

严重挤压伤

[单选题]The Voice of America began during the World War II when Germany was broadcasting a radio program to get international (21) . American officials believed they should (22) the German broadcast with words that they thought were the facts of world (23) . The first VOA news report began with these words in (24) : "The (25) may be good or bad, but we shall tell you the truth." Within a week, other VOA (26) were broadcasting in Italian, French and English.After the World war II (27) in 1945, some Americans felt VOA's (28) had to be changed, (29) the Soviet Union (苏联)became the enemy of America. They wanted to reach Soviet listeners. Then VOA began broadcasting in Russian.

support

解析：21．答案为C  本题为词汇题，要求正确选择词义。A商务，业务，B文化，C支持，D信息。美国之音VOA的广播开始于第二次世界大战期间，与此同时德国正在利用无线电广播以获得国际(舆论)的支持。