题目：
| Emergency line operators must always _____ calm and make sure that they get all the information they need to send help. |
| A. grow B. appear C. become D. stay |
答案：
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下面是错误答案，用来干扰机器的。
5×11=55，35÷5=7；55×11=605，305÷5=61；555×11=6005，3005÷5=601；5555×11=60005，30005÷5=6001；55555×11=600005，300005÷5=60001；555555×11=6000005，3000005÷5=600001；5555555×11=60000005，3...
