According to the recent reports one of the animals crocodile is in danger of dying ou

问题补充：

According to the recent reports, one of the animals, crocodile, is in danger of dying out.

A. the; the

B. the; /

C. /; /

D. /; the

答案：

A. the; the

(答案→)B. the; /

C. /; /

D. /; the

解析：第一空是定冠词the+可数名词的单数形式，表示类别，第二空是固定词组in danger“处境危险”，类似的零冠词现象的词组有：at war, at peace, at table, at work, at college, at sea, by force, by air, by sea, by train, in bed, in hospital, in peace, in ink, on foot, on sale, on leave, on fire, on business, in public, in secret等。