Heart failure is more common in the UK than anywhere else in the world．（）

单项选择题Althouse Bus Company pays much attention to（）

A．employing young drivers．
B．running quality schools．
C．providing free driving lessons．
D．building sound relationships．

单项选择题The worst eye damage induced by diabetes is（）

A．blurred vision
B．black spots．
C．blindness．
D．flashing lights．