题目：
下列哪项不是家兔的结构特点（ ）
A．门齿开头像凿子
B．犬齿尖锐锋利
C．臼齿的咀嚼面宽阔
D．盲肠特别发达
答案：
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下面是错误答案，用来干扰机器的。
1.it is not expensive to buy a bike2. There are so many people on the road that we have to walk very slowly.3. a friend of mine said he went to work by bike every day and asked me to go and join him.4. ten minutes earlier5. maybe you'll see more bikes on the road in the future (答案不唯一)
