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10. The work of mathematician Roger Penrose in the early 1970s, on the geometry of what are called aperiodic tiles, turned out to describe the architecture of a previously unknown class of crystals.
(A) what are called aperiodic tiles, turned out to describe
(B) what is called aperiodic tiles, describes
(C) aperiodic tiles, describing
(D) so-called aperiodic tiles, describe
(E) aperiodic tiles, it turned out to describe
11. There are more than forty newspapers published in the cities of Kerala, a state on the Malabar Coast, which reflects the fact that Keralans are by far India's most literate citizens.
(A) which reflects
(B) and that number reflects
(C) which reflect
(D) that number reflects
(E) that reflects
12. Stars like the sun can continue to shine steadily for billions of years because its light and heat are produced by nuclear fusion, in which titanic releases of energy result in the loss of only tiny amounts of mass.
(A) its light and heat are produced by nuclear fusion, in which
(B) nuclear fusion produces its light and heat, in which
(C) nuclear fusion produces their light and heat, where
(D) its light and heat are produced by nuclear fusion, where
(E) their light and heat are produced by nuclear fusion, in which
13. After the Vietnam war Bettye Granther, a U.S. Army nurse, continued her efforts on behalf of injured Vietnamese children, providing medical care, helping to reunite estranged families, and the establishment of a fund for the children's future education.
(A) the establishment of a fund for the children's future education
(B) the establishing of a fund for the future education of children
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