Which of the following statements is proposed by researchers？
A. Later-borns do not compete for attention.
B. First-borns tend to become rebels.
C. Later-boms are prone, to diseases.
D. First-borns achieve more than younger ones.
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According to the author, how could trust be established？
A. By economic means.
By legitimate measures.
C. By authoritative command.
D. By effort or action.
It must guide public opinion, after presenting______both sides of every issue and pointing
A. inquisitively
B. inconceivably
C. appallingly
D. impartially
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
Scientists are______certain that there is a cancer — inhibiting agent in the blood of the
A. dubiously
B. virtually
C. queerly
D. randomly
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