A-A+
Which statement is not true about fiageIla?[A]
问题详情
Which statement is not true about fiageIla?
[A] Flagella are part of bacteria.
[ B ] Flagella help bacteria to move.
[C] Flagella are always going round and round.
[D] Flagella are like waves.请帮忙给出正确答案和分析,谢谢!
参考答案
正确答案:A
47.A【命题目的】此题考查考生对文章细节的理解能力。【解题要点】根据第二段第一句中“somebacteriahaveattachedtowavy-looking‘haks'calledflagella”可见,细菌是附着在鞭毛上的,鞭毛并不是细菌内部的组成部分,A项不符合文意。根据该句中“wav-y-lookinghairs”可见鞭毛的外表呈波浪状,D项正确。根据第二段第二句“Theflagellarotate,pushingthebacteriathroughthewater.”可见,鞭毛可以推动细菌在水中行进,B项正确。根据该句的前半句可知,鞭毛的运动方式是旋转式的,C项正确。故正确答案为A选项。