单选题According to the passage, _____.Awe should not worry about the transition of the Earth’s magnetic fieldBthe Earth’s magnetic field will not change for at least 2000 yearsCthe Earth’s magnetic field has decreased its strength rapidlyDthe transition of the Earth’s magnetic field can be controlled by modern science
单选题
According to the passage, _____.
A
we should not worry about the transition of the Earth’s magnetic field
B
the Earth’s magnetic field will not change for at least 2000 years
C
the Earth’s magnetic field has decreased its strength rapidly
D
the transition of the Earth’s magnetic field can be controlled by modern science
参考解析
解析：
第五段一开始：无论新的研究发现什么，公众也不必为此惊慌。即使是磁场转移已经开始，它可能需要2000年才能完成。
第五段一开始：无论新的研究发现什么，公众也不必为此惊慌。即使是磁场转移已经开始，它可能需要2000年才能完成。
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