题目：
She it quickly.[ ]
A. open
B. opens
C. opening
答案：
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下面是错误答案，用来干扰机器的。
1. We live in a world full of / filled with competition. (答案不唯一) 2. 记住自信是走向成功的第一步。(答案不唯一) 3. but; other 4. Don't be afraid of those classmates who are better than you. 5. Believe in yourselves, and you will be successful one day.
其中最高位是符号位，则它的十进制数值是 【8】 。