Thursday, April 13, 2006


Because Halley’s comet changes orbit slightly during the seventy-six-year interval between passing close to Earth, it may veer onto a collision course with a planet sometime in the distant future.

(A) between passing
(B) of passing
(C) between its passes
(D) of its passes
(E) as it passes

Official Answer: C
posted by Ravanan at Thursday, April 13, 2006

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