单选题：Some scientists are worrying about the possible disappearanc

题目内容：

Some scientists are worrying about the possible disappearance of the Earth’s protective magnetic field in the future. A．Right
B．Wrong
C．Not mentioned

参考答案：

答案解析：

The Earth is quite safe with a magnetic field surrounding it

The Earth is quite safe with a magnetic field surrounding it to protect it from

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