单选题：The worst eye damage induced by diabetes is_____．

题目内容：

The worst eye damage induced by diabetes is_____． A．blurred vision
B．black spots
C．blindness
D．flashing lights

参考答案：

答案解析：

With diabetic retinopathy，the damaged blood vessels in the r

With diabetic retinopathy，the damaged blood vessels in the retina_____．A．are str

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