Which of the following is the best title for the passage？
A. Polarity Reversal: A Fantastic Phenomenon of Nature.
B. Measurement of the Earth's Magnetic-Field Intensity.
C. Formation of the Two Poles of the Earth.
D. A New Approach to the Study of Geophysics.
查看答案
In Peter Olson's opinion, the French experiment ______.
A. is likely to direct further research in the inner physics of the earth
B. has successfully solved the mystery of polarity reversals
C. is certain to help predict external disasters
D. has caused great confusion among the world's geophysicists
【B6】
A. imported
B. donated
C. transported
D. purchased
The French Geophysicists' study is different from currently prevailing theories in ______.
A. its identification of the origin of the earth's magnetic field
B. the way the earth's magnetic intensity is measured
C. its explanation of the shift in the earth's polarity
D. the way the earth's fluctuation rhythm is defined
【B3】
A. criticize
B. reject
C. advocate
D. sport
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