问题补充:
A 16-year-old male student had been infected with bird flu in Hunan province , the fourth case of human bird flu found in China.
A. committed
B. confirmed
C. convinced
D. considered
答案:
A. committed
(答案→)B. confirmed
C. convinced
D. considered
解析:词义辨析。Commit犯罪,做错事;confirm确认,证实;convince说服,使确信; considere考虑。句意:湖南省一位十六岁的男生被确认感染了禽流感,这是在中国的第四例人类禽流感。故选B。