Research contradicts conventional ideas

Questions 6-10

Do the following statements reflect the claims of the writer in Reading Passage 1？

In boxes 6-10 on your answer sheet write

YES——if the statement reflects the claims of the writer

NO——if the statement contradicts the claims of the writer

NOT GIVEN——if it is impossible to say what the writer thinks about this

According to British research, a mere twelve per cent of vehicles tested produced over fifty per cent of total pollution produced by the sample group.

A．YES

B．NO

C．NOT GIVEN

es 6-10 on your answer sheet write YES if the statement reflects the claims of the writer NO if the statement contradicts the claims of the writer NOT GIVEN if it is impossible to say what the writer thinks about this

According to British research, a mere twelve per cent of vehicles tested produced over fifty per cent of total pollution produced by the sample group.

In certain situations body action contradicts what is being said.()

them. It fluctuates in strength, drifts from its axis, and every few 100, 000 years undergo a dramatic polarity reversal-a period when north pole becomes south pole and south pole becomes north pole. But how is the field generated, and why is it so unstable？

Groundbreaking research by two French geophysicists promises to shed some light on the mystery. Using 80 meters of deep sea sediment core, they have obtained measurements of magnetic-field intensity that span 11 polarity reversals and four million years. The analysis reveals that intensity appears to fluctuate with a clear, well-defined rhythm. Although the strength of the magnetic field varies irregularly during the shout term, there seems to be an inevitable long term decline preceding each polarity reversal. When the poles flip-a process that takes several hundred thousand years--the magnetic field rapidly regains its strength and the cycle is repeated.

The results have caused a stir among geophysicists. The magnetic field is thought to originate from molten iron in the outer core, 3,000 kilometers beneath the earth's surface. By studying mineral grains found in material ranging from rocks to clay articles, previous researchers have already been able to identify reversals dating back 170 million years, including the most recent switch 730, 000 years age. 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 if the French researchers are right. In fact, Olson says intensity that predictably declines from one reversal to the next contradicts 90 percent of the models currently under study. If the results prove to be valid, geophysicists will have a new theory to guide them in their quest to understand the earth's inner physics. It certainly points the direction for future research.

Which of the following titles in most appropriate to 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

Every conclusion contradicts what the audience believes.()

参考答案：错误

A.contradicts

B.shapes

C.summarizes

D.exchanges

A.entails

B.asserts

C.presupposes

D.contradicts

spots" contradicts, in particular, the ideas of

A．Jacobs

B．Wallace

C．Austin

D．Darwin

E．Huxley