He his friend in the crowd at the first sight and called out his name.
A. spotted
B. watched
C. observed
D. glared
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(答案→)A. spotted
B. watched
C. observed
D. glared
解析：考查词义辨析。spotted认出，watched 观看，observed 观察，glared怒视，句意:他在人群中一眼就认出了他的朋友并喊出了他的名字。故选A。