单项选择题

Her six brothers as well as her father, ______to control her as if she had 'seven fathers'.
A．are trying
B．has tried
C．is trying
D．tries

A.
A．are
B.has
C.is
D.tries

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关于细菌鞭毛的叙述不正确的是

A.不同的菌种鞭毛的数目、位置可不相同
B.是细菌的运动器官
C.细菌可通过鞭毛转移质粒
D.鞭毛运动可增强细菌对宿主的侵害
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单项选择题

Our classall fond of singing English songs and we can sing than others.
A．is; many more
B．are; many more
C．is; much more
D．are; much more

A.
A．is;
B.are;
C.is;
D.are;