While working outdoors Linda was by the heat and fell to the ground unconscious.A. ast

问题补充：

While working outdoors, Linda was by the heat and fell to the ground, unconscious.

A. astonished

B. depressed

C. overcome

D. hit

答案：

A. astonished

B. depressed

(答案→)C. overcome

D. hit

解析：C考查动词辨析。句意：Linda在户外工作时热晕了，倒在地上，不省人事。astonish“使吃惊”；depress“使沮丧”；overcome“受到……的极大影响”；hit“打”。根据句意可知应选C项。