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Magnetic field is an earth phenomenon that ______. The French Geophysicists’ study is different from currently prevailing theor
Magnetic field is an earth phenomenon that ______. The French Geophysicists’ study is different from currently prevailing theor
admin
2009-09-12
49
问题
Magnetic field is an earth phenomenon that ______.
The French Geophysicists’ study is different from currently prevailing theories in ______.
选项
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
答案
C
解析
本题问“两位法国地球物理学家的研究与主流理论不同的地方是什么?”根据文章第三段:How and why they occur,however has been widely debated. Several theories link polarity flips to external disasters such as meteor impacts.But Peter Olson,a geophysicist at the Johns Hopkins University in Baltimore says this is unlikely that if the French researchers are right. 也就是说,有的理论认为磁极反转是由于地球外物体如陨星的影响,但是Peter Olson认为如果两位法国研究者的理论正确的话就不可能是外界物体的影响。由此可见,法国学者的理论在磁极反转方面与其他不同,故[C]“它对地球两极交替的解释”正确。[A]“它对地球磁场形成的鉴定”。文中并未提及地球磁场的形成。[B]“地球磁场强度被测量的方式”。这一点文中只提到两位法国学者的测量方式,并没提其他人的方式,有可能相同也有可能不同,本项属于过度推断。[D]“它对地球波动节奏的定义”。文中第二段第三句define 的意思是“阐述,描述,解释”,不是下定义的意思。所以well-defined 意为“容易解释,有序”。这里是混淆了define的两种意思。
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0
大学英语四级
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