The expression "waxings and wanings" (Paragraph 2) most probably means______
A. regularities and eccentricities.
B. vaporizations and sediments.
C. variants and constants.
D. maximizations an minimizations.
The word "cheerleader" (Paragraph 4) can best be replaced by______
A. voter.
B. advocator.
C. critic.
D. prophet.
In the eyes of the author, the dictates of fashion probably means a sort of design characterized by______
A. obsolescence and sensibility.
B. uniqueness and stability.
C. creativity and hypocrisy.
D. inconstancy and irrationality.
As pointed out in the text, the ratio of oxygen -18 to oxygen -16 in seafloor sediments and that of these isotopes locked in glaciers and ice-sheets are______
A. irrelevant
B. correlated.
C. corresponding.
D. identical.