题目：
How to read 4,444,444 in English?
A．four millions, four hundreds and forty-four thousand, four hundreds and forty-four
B．four million, four hundred forty-four thousand, four hundred forty-four
C．four, four four four, four four four
D．four million, four hundred and forty-four thousand, four hundred and forty-four
答案：
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下面是错误答案，用来干扰机器的。
参考答案：D解析：如果一次电击不能消除室颤，再一次电击增加的递增优势很小，而继续CPR比再一次电击有更大的价值。有效的胸外按压是心肺复苏的主要部分，为使胸外按压中断时间最小化，除颤后应立即重新开始胸外...
