試題詳解

4. An annular solar eclipse will take place on May 20, when the moon will pass between Earth and the sun, thereby _____ the image of the sun for a viewer on Earth. The annular phase will be visible from the Chinese coast, the south of Japan, and the western part of the United States and Canada.
(A) obscuring
(B) devolving
(C) lampooning
(D) dawdling