It is quite often that the workers are always by heat if they work outdoors for a long t

问题补充：

It is quite often that the workers are always by heat if they work outdoors for a long time in the hot summer afternoon.

A. astonished

B. depressed

C. overcome

D. hit

答案：

A. astonished

B. depressed

C. overcome

(答案→)D. hit

解析：D 考察动词。句义：在炎热的夏天的午后的室外工作时间很长的话，工人会中暑的。Be hit by heat中暑。