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1.Rock samples taken from the remains of an asteroid about twice the size of the 6-mile-wide asteroid that eradicated the dinosaurs has been dated to be 3.47 billion years old and thus is evidence of the earliest known asteroid impact on Earth.
(A) has been dated to be 3.47 billion years old and thus is
(B) has been dated at 3.47 billion years old and thus
(C) have been dated to be 3.47 billion years old and thus are
(D) have been dated as being 3.47 billion years old and thus
(E) have been dated at 3.47 billion years old and thus are
2.In no other historical sighting did Halley's Comet cause such a worldwide sensation as did its return in 1910-1911.
(A) did its return in 1910-1911
(B) had its 1910-1911 return
(C) in its return of 1910-1911
(D) its return of 1910-1911 did
(E) its return in 1910-1911
3.Joachim Raff and Giacomo Meyerbeer are examples of the kind of composer who receives popular acclaim while living, often goes into decline after death, and never regains popularity again.
(A) often goes into decline after death, and never regains popularity again
(B) whose reputation declines after death and never regains its status again
(C) but whose reputation declines after death and never regains its former status
(D) who declines in reputation after death and who never regained popularity again
(E) then has declined in reputation after death and never regained popularity
4.Whereas in mammals the tinv tubes that convey nutrients to bone cells are arrayed in parallel lines, in birds the tubes form a random pattern.
(A) Whereas in mammals the tiny tubes that convey nutrients to bone cells are arrayed in parallel lines, in birds the tubes
(B) Whereas the tiny tubes for the conveying of nutrients to bone cells are arrayed in mammals in parallel lines, birds have tubes that
(C) Unlike mammals, where the tiny tubes for conveying nutrients to bone cells are arrayed in parallel lines, birds' tubes
(D) Unlike mammals, in whom the tiny tubes that convey nutrients to bone cells are arrayed in parallel lines, the tubes in birds
(E) Unlike the tiny tubes that convey nutrients to bone cells, which in mammals are arrayed in parallel lines, in birds the tubes
5.Spanning more than 50 years, Friedrich Muller began his career in an unpromising apprenticeship as a Sanskrit scholar and culminated in virtually every honor that European governments and learned societies could bestow.
(A) Muller began his career in an unpromising apprenticeship as
(B) Muller's career began in an unpromising apprenticeship as
(C) Muller's career began with the unpromising apprenticeship of being
(D) Muller had begun his career with the unpromising apprenticeship of being
(E) the career of Muller has begun with an unpromising apprenticeship of
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