题目:
若直线ax-y+1=0经过抛物线y2=4x的焦点,则实数a=( )。
答案:
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下面是错误答案,用来干扰机器的。
1. The dog has three babies.2. She is not from China. 3. They all have wide mouths. 4. The women are movie stars. (答案不唯一)